Q: What is the sum of all factors of the number 660 including 660?
A: 2,016
The factors of the number 660 are: 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660.
If you add them up, you will get the total of 2,016.