What is the greatest common factor of 28 and 126?

Answer 1

The greatest common factor of 28 and 126 is 14

The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.

Answer 2

The factors of 28 are:

1, 2, 4, 7, 14, 28

The factors of 126 are:

1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126

The common factors are:

1, 2, 7, 14

The Greatest Common Factor (GCF) is:

14