Q: What is the sum of all factors of the number 407,409 excluding 407,409?
A: 140,271
The factors of the number 407,409 are: 1, 3, 139, 417, 977, 2931, 135803, 407409.
If you add them up, you will get the total of 407,549. Now subtract 407,409 to get 140,271