1 and 2
The factors of 54 are:1, 2, 3, 6, 9, 18, 27, 54The factors of 56 are:1, 2, 4, 7, 8, 14, 28, 56The common factors are:1, 2
1 (this is a factor of all numbers) and 2 (since 54 and 56 are both even numbers)
54 - 1, 2, 3, 6, 9, 18, 27, 54 56 - 1, 2, 4, 7, 8, 14, 28, 56 They each have 8 factors. They have a total of 16 factors together.
GCF(54, 56) = 2.
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40 The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54 The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
The common factors of 56 and 18 are 1 and 2.
The common factors of 32 and 54 are: 1 and 2
Common factors of 54 and 22 are: 1 and 2.
The common factors of 54 and 75 are 1 and 3.
The common factors of 38 and 56 are 1 and 2.
2
Since 54 is a factor of 108, all of 54's factors are common and the GCF is 54 itself.