Q: What is the sum of all factors of the number 2,115 excluding 2,115?
A: 1,629
The factors of the number 2,115 are: 1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115.
If you add them up, you will get the total of 2,116. Now subtract 2,115 to get 1,629