Q: What is the sum of all factors of the number 172,780 excluding 172,780?
A: 199,172
The factors of the number 172,780 are: 1, 2, 4, 5, 10, 20, 53, 106, 163, 212, 265, 326, 530, 652, 815, 1060, 1630, 3260, 8639, 17278, 34556, 43195, 86390, 172780.
If you add them up, you will get the total of 172,979. Now subtract 172,780 to get 199,172