Q: What is the sum of all factors of the number 639,906 including 639,906?
A: 1,335,744
The factors of the number 639,906 are: 1, 2, 3, 6, 23, 46, 69, 138, 4637, 9274, 13911, 27822, 106651, 213302, 319953, 639906.
If you add them up, you will get the total of 1,335,744.