Q: What is the sum of all factors of the number 644,720 excluding 644,720?
A: 854,440
The factors of the number 644,720 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8059, 16118, 32236, 40295, 64472, 80590, 128944, 161180, 322360, 644720.
If you add them up, you will get the total of 645,574. Now subtract 644,720 to get 854,440