Q: What is the sum of all factors of the number 645,560 excluding 645,560?
A: 807,040
The factors of the number 645,560 are: 1, 2, 4, 5, 8, 10, 20, 40, 16139, 32278, 64556, 80695, 129112, 161390, 322780, 645560.
If you add them up, you will get the total of 646,367. Now subtract 645,560 to get 807,040