Q: What is the sum of all factors of the number 398,740 including 398,740?
A: 837,396
The factors of the number 398,740 are: 1, 2, 4, 5, 10, 20, 19937, 39874, 79748, 99685, 199370, 398740.
If you add them up, you will get the total of 837,396.