Q: What is the sum of all factors of the number 21,190 excluding 21,190?
A: 20,138
The factors of the number 21,190 are: 1, 2, 5, 10, 13, 26, 65, 130, 163, 326, 815, 1630, 2119, 4238, 10595, 21190.
If you add them up, you will get the total of 21,210. Now subtract 21,190 to get 20,138