Q: What is the sum of all factors of the number 10,420 excluding 10,420?
A: 11,504
The factors of the number 10,420 are: 1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 5210, 10420.
If you add them up, you will get the total of 10,431. Now subtract 10,420 to get 11,504