Q: What is the sum of all factors of the number 191,780 excluding 191,780?
A: 222,172
The factors of the number 191,780 are: 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 223, 430, 446, 860, 892, 1115, 2230, 4460, 9589, 19178, 38356, 47945, 95890, 191780.
If you add them up, you will get the total of 192,002. Now subtract 191,780 to get 222,172