Greatest Common Factor of 390, 640

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 390, 640 i.e. 10 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 390, 640 is 10.

GCF(390, 640) = 10

GCF of 390, 640

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

GCF of:

Greatest Common Factor of 390,640

GCF of 390,640 is 10

2 390, 640
5 195, 320
39, 64

∴ So the GCF of the given numbers is 2 x 5 = 10

Greatest Common Factor (GCF) By Matching Biggest Common Factor Method

Factors of 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

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

Greatest Common Factor

We found the factors 390,640 . The biggest common factor number is the GCF number.
So the greatest common factor 390,640 is 10.

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 390, 640

1. What is the GCF of 390, 640?

Answer: GCF of 390, 640 is 10.

2. How to Find the GCF of 390, 640

Answer: Greatest Common Factor(GCF) of 390, 640 = 10

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(390, 640) = 10.