Q: What is the sum of all factors of the number 256,257 excluding 256,257?
A: 123,423
The factors of the number 256,257 are: 1, 3, 9, 27, 9491, 28473, 85419, 256257.
If you add them up, you will get the total of 256,380. Now subtract 256,257 to get 123,423