Q: What is the sum of all factors of the number 9,990 including 9,990?
A: 27,360
The factors of the number 9,990 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 90, 111, 135, 185, 222, 270, 333, 370, 555, 666, 999, 1110, 1665, 1998, 3330, 4995, 9990.
If you add them up, you will get the total of 27,360.