the greatest common factor is 7,
because 21 divided by 7 is 3,
28 divided by 7 is 4
and 56 divided by 7 is 8.
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Factors are numbers you can multiply together to get another number. Common factors are the factors two or more numbers have in common. 28: 1, 2, 4, 7, 14, 28 42: 1, 2, 3, 6, 7, 14, 21, 42 The common factors of 28 and 42 are 1, 2, 7 and 14.
The common factors of 28 and 42 are: 1, 2, 7, and 14The factors of 28 are:1, 2, 4, 7, 14, 28The factors of 42 are:1, 2, 3, 6, 7, 14, 21, 42The common factors are: 1, 2, 7, 14
The common factors of 28 and 84 are 1,2,4,7,14 and 28.
The common factors of 28 and 84 are 1,2,4,7,14 and 28
The factors of 28 are: 1, 2, 4, 7, 14, 28.The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.The common factors are: 1, 2, 7, 14