one and eighty
two and forty
four and twenty
five and sixteen
eight and ten
How did I get these factors?
Factors are what the numbers are divided by in order to get a whole number. For instance, 80/1=80 thus it is a factor. In contrast, 80/6 13.33 because 13.33 is not a whole number six is not a factor of 80.
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There are 5 factor pairs of 80. The factor pairs of 80 are 1 x 80, 2 x 40, 4 x 20, 5 x 16, and 8 x 10.