1854
-96
2 * 2 * 2 * 2 *5 = 80 there isn't any
The factors of 21 that add up to 8 are 1 and 7.
51 + 29 = 80
527
None. Factors don't add, they multiply.
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
(8²)64 + (4²)16 = 80
They both add up to 169