Q: What is the sum of all factors of the number 15,855 excluding 15,855?
A: 13,329
The factors of the number 15,855 are: 1, 3, 5, 7, 15, 21, 35, 105, 151, 453, 755, 1057, 2265, 3171, 5285, 15855.
If you add them up, you will get the total of 15,868. Now subtract 15,855 to get 13,329