1,2,4,5,10,20
1,2,4,7,14,28
The factors of 20 are: 1 2 4 5 10 20
The prime factors are: 2 x 2 x 5 & The factors of 28 are: 1 2 4 7 14 28
The prime factors are: 2 x 2 x 7
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1, 2 and 4
The factors of 20 are: 1, 2, 4, 5, 10, 20 The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
1, 2, 4, 5, 10, 20 1, 2, 4, 7, 14, 28
The common factors of 12 and 28 are 1, 2 and 4
The factors of 28 are:1, 2, 4, 7, 14, 28The factors of 78 are:1, 2, 3, 6, 13, 26, 39, 78The common factors are:1, 2The Greatest Common Factor (GCF) is: 2