Q: What is the sum of all factors of the number 639,939 excluding 639,939?
A: 275,261
The factors of the number 639,939 are: 1, 3, 19, 57, 103, 109, 309, 327, 1957, 2071, 5871, 6213, 11227, 33681, 213313, 639939.
If you add them up, you will get the total of 640,214. Now subtract 639,939 to get 275,261