Q: What is the sum of all factors of the number 640,480 excluding 640,480?
A: 873,032
The factors of the number 640,480 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4003, 8006, 16012, 20015, 32024, 40030, 64048, 80060, 128096, 160120, 320240, 640480.
If you add them up, you will get the total of 641,353. Now subtract 640,480 to get 873,032