Q: What is the sum of all factors of the number 428,421 including 428,421?
A: 681,984
The factors of the number 428,421 are: 1, 3, 7, 21, 23, 69, 161, 483, 887, 2661, 6209, 18627, 20401, 61203, 142807, 428421.
If you add them up, you will get the total of 681,984.