Q: What is the sum of all factors of the number 639,042 excluding 639,042?
A: 657,438
The factors of the number 639,042 are: 1, 2, 3, 6, 73, 146, 219, 438, 1459, 2918, 4377, 8754, 106507, 213014, 319521, 639042.
If you add them up, you will get the total of 639,699. Now subtract 639,042 to get 657,438