Q: What is the sum of all factors of the number 2,440 excluding 2,440?
A: 3,140
The factors of the number 2,440 are: 1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440.
If you add them up, you will get the total of 2,443. Now subtract 2,440 to get 3,140