Greatest Common Factor of 640, 980
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 640, 980 i.e. 20 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 640, 980 is 20.
GCF(640, 980) = 20
GCF of 640, 980
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
- Greatest Common Factor of 640, 980 by common division method
- Greatest Common Factor of 640, 980 with matching the biggest common factor
GCF of 640,980 is 20
| 2 | 640, 980 |
| 2 | 320, 490 |
| 5 | 160, 245 |
| 32, 49 |
∴ So the GCF of the given numbers is 2 x 2 x 5 = 20
Factors of 640
List of positive integer factors of 640 that divides 640 without a remainder.
1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640
Factors of 980
List of positive integer factors of 980 that divides 980 without a remainder.
1,2,4,5,7,10,14,20,28,35,49,70,98,140,196,245,490,980
Greatest Common Factor
We found the factors 640,980 . The biggest common factor number is the GCF number.
So the greatest common factor 640,980 is 20.
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 640, 980
1. What is the GCF of 640, 980?
Answer: GCF of 640, 980 is 20.
2. How to Find the GCF of 640, 980
Answer: Greatest Common Factor(GCF) of 640, 980 = 20
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(640, 980) = 20.