Q: What is the sum of all factors of the number 1,291,258 excluding 1,291,258?
A: 645,632
The factors of the number 1,291,258 are: 1, 2, 645629, 1291258.
If you add them up, you will get the total of 1,291,903. Now subtract 1,291,258 to get 645,632