Q: What is the sum of all factors of the number 20,390 excluding 20,390?
A: 16,330
The factors of the number 20,390 are: 1, 2, 5, 10, 2039, 4078, 10195, 20390.
If you add them up, you will get the total of 20,406. Now subtract 20,390 to get 16,330