Q: What is the sum of all factors of the number 256,420 excluding 256,420?
A: 282,104
The factors of the number 256,420 are: 1, 2, 4, 5, 10, 20, 12821, 25642, 51284, 64105, 128210, 256420.
If you add them up, you will get the total of 256,702. Now subtract 256,420 to get 282,104