Q: What is the sum of all factors of the number 3,720 excluding 3,720?
A: 7,800
The factors of the number 3,720 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720.
If you add them up, you will get the total of 3,727. Now subtract 3,720 to get 7,800