Q: What is the sum of all factors of the number 256,490 excluding 256,490?
A: 240,958
The factors of the number 256,490 are: 1, 2, 5, 10, 13, 26, 65, 130, 1973, 3946, 9865, 19730, 25649, 51298, 128245, 256490.
If you add them up, you will get the total of 256,730. Now subtract 256,490 to get 240,958