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A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.

One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.

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

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

The common factors are 1, 2, 4, 7, 14, and 28. Therefore, the greatest common factor is 28.
1/2/4/7/14/28

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1,2,4,7,14,28.

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10y ago
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Q: What are the common factors of 28 and 56?
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