7 and 2
90 and 6 60 and 36 eight twelves sixteen sixes twenty-four fours thirty-two threes forty-eight twos ninety-six ones
14 + 14 14 + 7 + 7 7 + 7 + 7 + 7 seven fours fourteen twos twenty-eight ones
4 and 7
12+12+12+12
The factors of 21 that add up to 8 are 1 and 7.
None. Factors don't add, they multiply.
try googling it... a calculator will pop up with the answer
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.
167
-1005
268