Q: What is the sum of all factors of the number 21,904 excluding 21,904?
A: 21,713
The factors of the number 21,904 are: 1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 1369, 2738, 5476, 10952, 21904.
If you add them up, you will get the total of 21,925. Now subtract 21,904 to get 21,713