Q: What is the sum of all factors of the number 668,660 including 668,660?
A: 1,428,000
The factors of the number 668,660 are: 1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 499, 670, 998, 1340, 1996, 2495, 4990, 9980, 33433, 66866, 133732, 167165, 334330, 668660.
If you add them up, you will get the total of 1,428,000.