Q: What is the sum of all factors of the number 6,408 excluding 6,408?
A: 11,142
The factors of the number 6,408 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 89, 178, 267, 356, 534, 712, 801, 1068, 1602, 2136, 3204, 6408.
If you add them up, you will get the total of 6,419. Now subtract 6,408 to get 11,142