1, 2, 4, 7, 14, 28
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
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It is: 28 which is the greatest common factor of 56 and 84
The GCF of 28 and 84 is 28.
It is: 28
The greatest common factor (gcf) of 56 and 84 is 28.56 = 2 x 2 x 2 x 784 = 2 x 2 x 3 x 7HCF = 2 x 2 x 7HCF = 28
The GCF is 14.