Q: What is the sum of all factors of the number 21,655 excluding 21,655?
A: 5,129
The factors of the number 21,655 are: 1, 5, 61, 71, 305, 355, 4331, 21655.
If you add them up, you will get the total of 21,660. Now subtract 21,655 to get 5,129