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factors of 16 are: 1, 2, 4, 8, and 16.

factors of 40 are 1, 2, 4, 5, 8, 10, and 20.

factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56.

common factors: 1,2,4, and 8.

greatest of the common factors: 8.

GCF of 16 40 and 56 = 8

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13y ago

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