They are 1 and 2
The 8 factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56. 2 and 8 add up to 10. Also, 1, 2, and 7 add up to 10.
To find factors of -504 that add up to -3, we must consider both positive and negative factors. The factors of 504 are 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, and 504. By considering the negative factors as well, we can identify that -7 and -72 are factors of -504 that add up to -3.
The prime factors of 40 are 2, 2, 2, 5 2 x 2 x 2 x 5 = 40
511
42
8 and 5
487
-20 and 2
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
31
factors of 30 that add to 17 are 2 and 15
167
-1005
They are: 3+37 = 40
23
Factors of 250 that add up to 8 = 1 + 2 + 5
1012