Q: What is the sum of all factors of the number 20,787 excluding 20,787?
A: 9,957
The factors of the number 20,787 are: 1, 3, 13, 39, 41, 123, 169, 507, 533, 1599, 6929, 20787.
If you add them up, you will get the total of 20,796. Now subtract 20,787 to get 9,957