Q: What is the sum of all factors of the number 13,720 excluding 13,720?
A: 22,280
The factors of the number 13,720 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2744, 3430, 6860, 13720.
If you add them up, you will get the total of 13,742. Now subtract 13,720 to get 22,280