Q: What is the sum of all factors of the number 4,020 excluding 4,020?
A: 7,404
The factors of the number 4,020 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020.
If you add them up, you will get the total of 4,027. Now subtract 4,020 to get 7,404