# Greatest Common Factor of 12, 20, 28

GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 12, 20, 28 i.e. 4 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 12, 20, 28 is 4.

GCF(12, 20, 28) = 4

## GCF of 12, 20, 28

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

GCF of:

### Greatest Common Factor (GCF) of 12,20,28 By Common Division

 2 12, 20, 28 2 6, 10, 14 3, 5, 7

∴ So the GCF of the given numbers is 2 x 2 = 4

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

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 20

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

1,2,4,5,10,20

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Greatest Common Factor

We found the factors 12,20,28 . The biggest common factor number is the GCF number.
So the greatest common factor 12,20,28 is 4.

### 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 12, 20, 28

1. What is the GCF of 12, 20, 28?

Answer: GCF of 12, 20, 28 is 4.

2. How to Find the GCF of 12, 20, 28

Answer: Greatest Common Factor(GCF) of 12, 20, 28 = 4

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

Step 2: Then multiply all the prime factors GCF(12, 20, 28) = 4.