Q: What is the sum of all factors of the number 20,871 excluding 20,871?
A: 10,089
The factors of the number 20,871 are: 1, 3, 9, 27, 773, 2319, 6957, 20871.
If you add them up, you will get the total of 20,881. Now subtract 20,871 to get 10,089