# Greatest Common Factor of 28 and 84

Greatest common factor (GCF) of 28 and 84 is 28.

GCF(28,84) = 28

We will now calculate the prime factors of 28 and 84, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28 and 84.

GCF Calculator and

## Prime Factorization of 28

Prime factors of 28 are 2, 7. Prime factorization of 28 in exponential form is:

28 = 22 × 71

## Prime Factorization of 84

Prime factors of 84 are 2, 3, 7. Prime factorization of 84 in exponential form is:

84 = 22 × 31 × 71

### Factors of 28

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

1, 2, 4, 7, 14

### Factors of 84

List of positive integer factors of 84 that divides 28 without a remainder.

1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42

### Greatest Common Factor

We found the factors and prime factorization of 28 and 84. The biggest common factor number is the GCF number.
So the greatest common factor 28 and 84 is 28.

Also check out the Least Common Multiple of 28 and 84

#### Related Greatest Common Factors of 84

##### Recent Comments
Ryan Halsh 2019-06-03 11:22:27

If possible, can you please add three text boxes for the GCF of 3 different numbers.

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