Q: What is the sum of all factors of the number 28,391 excluding 28,391?
A: 4,009
The factors of the number 28,391 are: 1, 11, 29, 89, 319, 979, 2581, 28391.
If you add them up, you will get the total of 28,395. Now subtract 28,391 to get 4,009