Q: What is the sum of all factors of the number 42,405 excluding 42,405?
A: 31,899
The factors of the number 42,405 are: 1, 3, 5, 11, 15, 33, 55, 165, 257, 771, 1285, 2827, 3855, 8481, 14135, 42405.
If you add them up, you will get the total of 42,436. Now subtract 42,405 to get 31,899