64 and 40's highest common factor is eight.
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The common factors of 40 and 64 are: 1, 2, 4, and 8The highest common factor is 8.
The greatest common factor(gcf) of 64 and 40 is 8. The factors of 40 are 2, 2, 2 and 5 The factors of 64 are 2, 2, 2, 2, 2, and 2 So the highest common factor will have no fives and three 2s = 2 x 2 x 2 = 8
64 and 16's highest common factor is 16.
The GCF is 8.
The GCF is 8.