Q: What is the sum of all factors of the number 20,618 excluding 20,618?
A: 13,420
The factors of the number 20,618 are: 1, 2, 13, 26, 61, 122, 169, 338, 793, 1586, 10309, 20618.
If you add them up, you will get the total of 20,631. Now subtract 20,618 to get 13,420