Q: What is the sum of all factors of the number 8,125 excluding 8,125?
A: 2,809
The factors of the number 8,125 are: 1, 5, 13, 25, 65, 125, 325, 625, 1625, 8125.
If you add them up, you will get the total of 8,127. Now subtract 8,125 to get 2,809