Q: What is the sum of all factors of the number 12,375 excluding 12,375?
A: 11,961
The factors of the number 12,375 are: 1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 125, 165, 225, 275, 375, 495, 825, 1125, 1375, 2475, 4125, 12375.
If you add them up, you will get the total of 12,386. Now subtract 12,375 to get 11,961