Q: What is the sum of all factors of the number 40,905 excluding 40,905?
A: 33,147
The factors of the number 40,905 are: 1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 303, 405, 505, 909, 1515, 2727, 4545, 8181, 13635, 40905.
If you add them up, you will get the total of 40,938. Now subtract 40,905 to get 33,147