30 and 18
32 and 15
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.
268
23
153
47
497
487
How about 47+47 = 94 as one example
The factors of 21 that add up to 8 are 1 and 7.
37
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.
Factors multiply. The same set of numbers won't add up to both 140 and 240, but 120 and 20 are factors of 240 that total 140.
-1005
167
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.