122 LearnersLast updated on May 26th, 2025
Factors of 805
Factors are the numbers that divide any given number evenly without remainder. In daily life, we use factors for tasks like sharing items equally, arranging things, etc. In this topic, we will learn about the factors of 805, how they are used in real life, and tips to learn them quickly.
What are the Factors of 805?
The numbers that divide 805 evenly are known as factors of 805.
A factor of 805 is a number that divides the number without remainder.
The factors of 805 are 1, 5, 7, 23, 35, 115, 161, and 805.
Negative factors of 805: -1, -5, -7, -23, -35, -115, -161, and -805.
Prime factors of 805: 5, 7, and 23.
Prime factorization of 805: 5 × 7 × 23.
The sum of factors of 805: 1 + 5 + 7 + 23 + 35 + 115 + 161 + 805 = 1152
How to Find Factors of 805?
Factors can be found using different methods. Mentioned below are some commonly used methods:
- Finding factors using multiplication
- Finding factors using division method
- Prime factors and Prime factorization
Finding Factors Using Multiplication
To find factors using multiplication, we need to identify the pairs of numbers that are multiplied to give 805. Identifying the numbers which are multiplied to get the number 805 is the multiplication method.
Step 1: Multiply 805 by 1, 805 × 1 = 805.
Step 2: Check for other numbers that give 805 after multiplying
5 × 161 = 805
7 × 115 = 805
23 × 35 = 805
Therefore, the positive factor pairs of 805 are: (1, 805), (5, 161), (7, 115), (23, 35). All these factor pairs result in 805.
For every positive factor, there is a negative factor.
Finding Factors Using Division Method
Dividing the given numbers with the whole numbers until the remainder becomes zero and listing out the numbers which result as whole numbers as factors. Factors can be calculated by following simple division method
Step 1: Divide 805 by 1, 805 ÷ 1 = 805.
Step 2: Continue dividing 805 by the numbers until the remainder becomes 0.
805 ÷ 1 = 805
805 ÷ 5 = 161
805 ÷ 7 = 115
805 ÷ 23 = 35
Therefore, the factors of 805 are: 1, 5, 7, 23, 35, 115, 161, 805.
Prime Factors and Prime Factorization
The factors can be found by dividing it with prime numbers. We can find the prime factors using the following methods:
- Using prime factorization
- Using factor tree
Using Prime Factorization: In this process, prime factors of 805 divide the number to break it down in the multiplication form of prime factors till the remainder becomes 1.
805 ÷ 5 = 161
161 ÷ 7 = 23
23 ÷ 23 = 1
The prime factors of 805 are 5, 7, and 23.
The prime factorization of 805 is: 5 × 7 × 23.
Factor Tree
The factor tree is the graphical representation of breaking down any number into prime factors. The following step shows
Step 1: Firstly, 805 is divided by 5 to get 161.
Step 2: Now divide 161 by 7 to get 23.
Step 3: Divide 23 by 23 to get 1. Here, 23 is the smallest prime number that cannot be divided anymore. So, the prime factorization of 805 is: 5 × 7 × 23.
Factor Pairs: Two numbers that are multiplied to give a specific number are called factor pairs. Both positive and negative factors constitute factor pairs.
Positive factor pairs of 805: (1, 805), (5, 161), (7, 115), and (23, 35).
Negative factor pairs of 805: (-1, -805), (-5, -161), (-7, -115), and (-23, -35).
Common Mistakes and How to Avoid Them in Factors of 805
Mistakes are common while finding factors. We can identify and correct those mistakes using the following common mistakes and the ways to avoid them.
Mistake 1
Forgetting the number itself and 1 is a factor
Children might forget to add the given number itself and 1 as a factor. The number itself and 1 are the factors for every number. Always remember to include 1 and the number itself.
For example, in factors of 805, 1 and 805 are also factors.
Mistake 2
Missing Negative Factors
We have used only to mention positive factors every time. There are also negative factors, always check whether you have mentioned negative factors.
For example, the factors of 805 consist of -1, -5, -7, etc.
Mistake 3
Including the Fraction
Children might sometimes add fraction also as a factor. Only whole numbers can be a factor.
For example, thinking 2.5 as a factor, because 805/2.5 = 322, and it is not a whole number.
Mistake 4
Confusing Factors With Prime Numbers
Remember that factors can be any whole numbers, not only just primes.
For example, thinking all the factors of 805 are prime numbers.
For example, 5, 7, and 23 are the prime factors of 805, but it has other factors like 35, 115.
Mistake 5
Mistake in Factorization
Children might skip the steps in factorization and end up writing wrong factors.
For example, not breaking 805 as 5 × 7 × 23 and missing all the key factors.
Factors of 805 Examples
Problem 1
A group of 23 people is planning a road trip, and they have 805 miles to cover. How many miles will each person be responsible for if they divide the distance equally?
Each person will be responsible for 35 miles.
Explanation
To divide the distance equally, we need to divide the total miles by the number of people.
805/23 = 35
Problem 2
A long piece of ribbon measuring 805 meters needs to be cut into shorter pieces, each 7 meters long. How many pieces can be cut?
115 pieces.
Explanation
To find out how many pieces can be cut, divide the total length by the length of each piece.
805/7 = 115
Problem 3
A baker has 805 cupcakes and wants to pack them into boxes, each holding 161 cupcakes. How many boxes will he need?
The baker will need 5 boxes.
Explanation
To find the number of boxes, divide the total cupcakes by the number each box can hold.
805/161 = 5
Problem 4
A classroom of 35 students is organizing a charity marathon of 805 meters. How many meters will each student run if the distance is shared equally?
Each student will run 23 meters.
Explanation
Dividing the total distance by the number of participants gives the distance each will run.
805/35 = 23
Problem 5
A factory produces 805 gadgets and needs to package them into boxes of 5. How many boxes will be needed?
161 boxes are needed.
Explanation
Divide the total number of gadgets by the number each box can hold.
805/5 = 161
FAQs on Factors of 805
1.What are the factors of 805?
2.Mention the prime factors of 805.
3.Is 805 a multiple of 5?
4.Mention the factor pairs of 805?
5.What is the square of 805?
Important Glossaries for Factor of 805
- Factors: The numbers that divide the given number without leaving a remainder are called factors. For example, the factors of 805 are 1, 5, 7, 23, 35, 115, 161, and 805.
- Prime factors: The factors which are prime numbers. For example, 5, 7, and 23 are prime factors of 805.
- Factor pairs: Two numbers in a pair that are multiplied to give the original number are called factor pairs. For example, the factor pairs of 805 are (1, 805), (5, 161), etc.
- Prime factorization: Breaking down a number into its basic prime number factors. For 805, it is 5 × 7 × 23.
- Multiple: A number that can be divided by another number without a remainder. For example, 805 is a multiple of 5.
Explore More numbers
![Important Math Links Icon]()
Previous to Factors of 805
Hiralee Lalitkumar Makwana
About the Author
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
Fun Fact
: She loves to read number jokes and games.
