Q: What is the sum of all factors of the number 20,408 excluding 20,408?
A: 17,872
The factors of the number 20,408 are: 1, 2, 4, 8, 2551, 5102, 10204, 20408.
If you add them up, you will get the total of 20,425. Now subtract 20,408 to get 17,872