Q: What is the sum of all factors of the number 135,009 excluding 135,009?
A: 87,967
The factors of the number 135,009 are: 1, 3, 7, 9, 21, 63, 2143, 6429, 15001, 19287, 45003, 135009.
If you add them up, you will get the total of 135,096. Now subtract 135,009 to get 87,967