Q: What is the sum of all factors of the number 20,420 excluding 20,420?
A: 22,504
The factors of the number 20,420 are: 1, 2, 4, 5, 10, 20, 1021, 2042, 4084, 5105, 10210, 20420.
If you add them up, you will get the total of 20,442. Now subtract 20,420 to get 22,504