Q: What is the sum of all factors of the number 640,505 excluding 640,505?
A: 142,927
The factors of the number 640,505 are: 1, 5, 53, 265, 2417, 12085, 128101, 640505.
If you add them up, you will get the total of 640,647. Now subtract 640,505 to get 142,927