Greatest Common Factor of 20, 42, 78, 4, 82

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 20, 42, 78, 4, 82 i.e. 2 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 20, 42, 78, 4, 82 is 2.

GCF(20, 42, 78, 4, 82) = 2

GCF of 20, 42, 78, 4, 82

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

GCF of:

Greatest Common Factor of 20,42,78,4,82

GCF of 20,42,78,4,82 is 2

2 20, 42, 78, 4, 82
10, 21, 39, 2, 41

∴ So the GCF of the given numbers is 2 = 2

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

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 4

List of positive integer factors of 4 that divides 4 without a remainder.

1,2,4

Factors of 82

List of positive integer factors of 82 that divides 82 without a remainder.

1,2,41,82

Greatest Common Factor

We found the factors 20,42,78,4,82 . The biggest common factor number is the GCF number.
So the greatest common factor 20,42,78,4,82 is 2.

GCF of two or more Numbers Calculation Examples

Frequently Asked Questions on GCF of 20, 42, 78, 4, 82

1. What is the GCF of 20, 42, 78, 4, 82?

Answer: GCF of 20, 42, 78, 4, 82 is 2.

2. How to Find the GCF of 20, 42, 78, 4, 82

Answer: Greatest Common Factor(GCF) of 20, 42, 78, 4, 82 = 2

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

Step 2: Then multiply all the prime factors GCF(20, 42, 78, 4, 82) = 2.