Q: What is the sum of all factors of the number 2,138,421 excluding 2,138,421?
A: 712,811
The factors of the number 2,138,421 are: 1, 3, 712807, 2138421.
If you add them up, you will get the total of 2,139,133. Now subtract 2,138,421 to get 712,811