Greatest Common Factor of 21, 165
Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 21, 165 i.e. 3 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 21, 165 is 3.
GCF(21, 165) = 3
GCF of 21, 165
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
- Greatest Common Factor of 21, 165 by common division method
- Greatest Common Factor of 21, 165 with matching the biggest common factor
GCF of 21,165 is 3
| 3 | 21, 165 |
| 7, 55 |
∴ So the GCF of the given numbers is 3 = 3
Factors of 21
List of positive integer factors of 21 that divides 21 without a remainder.
1,3,7,21
Factors of 165
List of positive integer factors of 165 that divides 165 without a remainder.
1,3,5,11,15,33,55,165
Greatest Common Factor
We found the factors 21,165 . The biggest common factor number is the GCF number.
So the greatest common factor 21,165 is 3.
GCF of two or more Numbers Calculation Examples
Here are some samples of GCF of two or more Numbers calculations.
Frequently Asked Questions on GCF of 21, 165
1. What is the GCF of 21, 165?
Answer: GCF of 21, 165 is 3.
2. How to Find the GCF of 21, 165
Answer: Greatest Common Factor(GCF) of 21, 165 = 3
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(21, 165) = 3.