Q: What is the sum of all factors of the number 21,158 excluding 21,158?
A: 11,242
The factors of the number 21,158 are: 1, 2, 71, 142, 149, 298, 10579, 21158.
If you add them up, you will get the total of 21,169. Now subtract 21,158 to get 11,242