Q: What is the sum of all factors of the number 12,705 excluding 12,705?
A: 12,831
The factors of the number 12,705 are: 1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1815, 2541, 4235, 12705.
If you add them up, you will get the total of 12,717. Now subtract 12,705 to get 12,831