Q: What is the sum of all factors of the number 161,780 excluding 161,780?
A: 178,000
The factors of the number 161,780 are: 1, 2, 4, 5, 10, 20, 8089, 16178, 32356, 40445, 80890, 161780.
If you add them up, you will get the total of 161,958. Now subtract 161,780 to get 178,000