Q: What is the sum of all factors of the number 21,100 excluding 21,100?
A: 24,904
The factors of the number 21,100 are: 1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1055, 2110, 4220, 5275, 10550, 21100.
If you add them up, you will get the total of 21,124. Now subtract 21,100 to get 24,904