Q: What is the sum of all factors of the number 280,991 excluding 280,991?
A: 28,129
The factors of the number 280,991 are: 1, 19, 23, 437, 643, 12217, 14789, 280991.
If you add them up, you will get the total of 281,019. Now subtract 280,991 to get 28,129