Q: What is the sum of all factors of the number 12,990 excluding 12,990?
A: 18,258
The factors of the number 12,990 are: 1, 2, 3, 5, 6, 10, 15, 30, 433, 866, 1299, 2165, 2598, 4330, 6495, 12990.
If you add them up, you will get the total of 13,008. Now subtract 12,990 to get 18,258