Q: What is the sum of all factors of the number 13,125 excluding 13,125?
A: 11,867
The factors of the number 13,125 are: 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 625, 875, 1875, 2625, 4375, 13125.
If you add them up, you will get the total of 13,136. Now subtract 13,125 to get 11,867