Q: What is the sum of all factors of the number 81,680 excluding 81,680?
A: 108,412
The factors of the number 81,680 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1021, 2042, 4084, 5105, 8168, 10210, 16336, 20420, 40840, 81680.
If you add them up, you will get the total of 81,788. Now subtract 81,680 to get 108,412