815
67
Here is a list.All Factors of 882:1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 441, 882
The factors of 21 that add up to 8 are 1 and 7.
I suppose you could use -42 twice. -63 and -21
factors of 30 that add to 17 are 2 and 15
819
Just 1 and 67.
67
Here is a list.All Factors of 882:1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 441, 882
7 and 67.
The factors of 21 that add up to 8 are 1 and 7.
I suppose you could use -42 twice. -63 and -21
31 & 67
137
59, 5 and 3
None. Factors don't add, they multiply.
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.