Q: What is the sum of all factors of the number 280,439 excluding 280,439?
A: 17,641
The factors of the number 280,439 are: 1, 23, 89, 137, 2047, 3151, 12193, 280439.
If you add them up, you will get the total of 280,456. Now subtract 280,439 to get 17,641