Q: What is the sum of all factors of the number 20,540 excluding 20,540?
A: 26,500
The factors of the number 20,540 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 4108, 5135, 10270, 20540.
If you add them up, you will get the total of 20,566. Now subtract 20,540 to get 26,500