Q: What is the sum of all factors of the number 639,472 excluding 639,472?
A: 672,944
The factors of the number 639,472 are: 1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 2351, 4702, 9404, 18808, 37616, 39967, 79934, 159868, 319736, 639472.
If you add them up, you will get the total of 640,144. Now subtract 639,472 to get 672,944