Q: What is the sum of all factors of the number 18,405 excluding 18,405?
A: 13,575
The factors of the number 18,405 are: 1, 3, 5, 9, 15, 45, 409, 1227, 2045, 3681, 6135, 18405.
If you add them up, you will get the total of 18,418. Now subtract 18,405 to get 13,575