What is the geatest common factor of 28 42 63?

Answer 1

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.

The greatest common factor of 32, 42, and 63 is 1

Answer 2

The greatest common factor of 63, 28 and 42 is: 7

Answer 3

Factors of 28: 1, 2, 4, 7, 14, 28

Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

Factors of 63: 1, 3, 7, 9, 21, 63

GCF (28, 42, 63) = 7

Answer 4

Factors of 27: 1, 3, 9, 27

Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

Factors of 63: 1, 3, 7, 9, 21, 63

GCF (27, 42, 63) = 3

Answer 5

• Factors of 14: 1, 2, 7, 14
• Factors of 28: 1, 2, 4, 7, 14, 28
• Factors of 63: 1, 3, 7, 9, 21, 63
• GCF (14, 28, 63) = 7

Answer 6

The GCF is 7.

Answer 7

7