Q: What is the sum of all factors of the number 21,399 excluding 21,399?
A: 11,241
The factors of the number 21,399 are: 1, 3, 7, 21, 1019, 3057, 7133, 21399.
If you add them up, you will get the total of 21,410. Now subtract 21,399 to get 11,241