Q: What is the sum of all factors of the number 12,393 excluding 12,393?
A: 7,281
The factors of the number 12,393 are: 1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 729, 1377, 4131, 12393.
If you add them up, you will get the total of 12,400. Now subtract 12,393 to get 7,281