Q: What is the sum of all factors of the number 13,431 excluding 13,431?
A: 6,785
The factors of the number 13,431 are: 1, 3, 11, 33, 37, 111, 121, 363, 407, 1221, 4477, 13431.
If you add them up, you will get the total of 13,437. Now subtract 13,431 to get 6,785