7*4
A number which can go into a number is called a factor.
factors of 28 = 1, 2, 4, 7, 14, 28
to find the factors of a certain number, divide this number by numbers from 1 to whatever the number is, and if the answer is an integer (whole number), it is a factor, e.g.
28: 28 divided by 4=7 therefore, both 4 and 7 are factors of 28
28 divided by 14=2 therefore 14 and 2 are factors of 28
28 divided by 28=1 therefore 28 and 1 are factors of 28
therefore, factors of 28 are 1, 28, 2, 14, 4, 7
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