Q: What is the sum of all factors of the number 129,680 excluding 129,680?
A: 172,012
The factors of the number 129,680 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1621, 3242, 6484, 8105, 12968, 16210, 25936, 32420, 64840, 129680.
If you add them up, you will get the total of 129,852. Now subtract 129,680 to get 172,012