Q: What is the sum of all factors of the number 11,907 excluding 11,907?
A: 8,841
The factors of the number 11,907 are: 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1701, 3969, 11907.
If you add them up, you will get the total of 11,915. Now subtract 11,907 to get 8,841