Q: What is the sum of all factors of the number 128,390 excluding 128,390?
A: 109,642
The factors of the number 128,390 are: 1, 2, 5, 10, 37, 74, 185, 347, 370, 694, 1735, 3470, 12839, 25678, 64195, 128390.
If you add them up, you will get the total of 128,499. Now subtract 128,390 to get 109,642