Q: What is the sum of all factors of the number 2,415 excluding 2,415?
A: 2,193
The factors of the number 2,415 are: 1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415.
If you add them up, you will get the total of 2,417. Now subtract 2,415 to get 2,193