Q: What is the sum of all factors of the number 2,601 excluding 2,601?
A: 1,390
The factors of the number 2,601 are: 1, 3, 9, 17, 51, 153, 289, 867, 2601.
If you add them up, you will get the total of 2,602. Now subtract 2,601 to get 1,390