Q: What is the sum of all factors of the number 661,090 excluding 661,090?
A: 528,890
The factors of the number 661,090 are: 1, 2, 5, 10, 66109, 132218, 330545, 661090.
If you add them up, you will get the total of 661,618. Now subtract 661,090 to get 528,890