Q: What is the sum of all factors of the number 13,409 excluding 13,409?
A: 2,143
The factors of the number 13,409 are: 1, 11, 23, 53, 253, 583, 1219, 13409.
If you add them up, you will get the total of 13,411. Now subtract 13,409 to get 2,143