Q: What is the sum of all factors of the number 12,440 excluding 12,440?
A: 15,640
The factors of the number 12,440 are: 1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440.
If you add them up, you will get the total of 12,455. Now subtract 12,440 to get 15,640