Q: What is the sum of all factors of the number 639,376 excluding 639,376?
A: 616,124
The factors of the number 639,376 are: 1, 2, 4, 8, 16, 89, 178, 356, 449, 712, 898, 1424, 1796, 3592, 7184, 39961, 79922, 159844, 319688, 639376.
If you add them up, you will get the total of 639,992. Now subtract 639,376 to get 616,124