Q: What is the sum of all factors of the number 678,640 excluding 678,640?
A: 995,360
The factors of the number 678,640 are: 1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 499, 680, 998, 1360, 1996, 2495, 3992, 4990, 7984, 8483, 9980, 16966, 19960, 33932, 39920, 42415, 67864, 84830, 135728, 169660, 339320, 678640.
If you add them up, you will get the total of 679,635. Now subtract 678,640 to get 995,360