Q: What is the sum of all factors of the number 10,040 excluding 10,040?
A: 12,640
The factors of the number 10,040 are: 1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040.
If you add them up, you will get the total of 10,052. Now subtract 10,040 to get 12,640