Q: What is the sum of all factors of the number 123,390 excluding 123,390?
A: 206,370
The factors of the number 123,390 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 457, 914, 1371, 2285, 2742, 4113, 4570, 6855, 8226, 12339, 13710, 20565, 24678, 41130, 61695, 123390.
If you add them up, you will get the total of 123,596. Now subtract 123,390 to get 206,370