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2 3 3 5 and 11 are the Prime Factors (excluding 1 and 990)

All other factors of 990 may be generated by grouping these prime factors as in:

(2 x 3) = 6

(2 x 3 x 3) = 18

(3 x 3) = 9

(3 x 5) = 15

(2 x 3 x 3 x 5) = 90

(3 x 11) =33

And so on . . .

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7y ago

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