The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
10 and 1490
-10 and +10.
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.
268
-10 & -18
35
-46
12610
-589
34
You are 9.