Q: What is the sum of all factors of the number 399,340 including 399,340?
A: 860,832
The factors of the number 399,340 are: 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 487, 820, 974, 1948, 2435, 4870, 9740, 19967, 39934, 79868, 99835, 199670, 399340.
If you add them up, you will get the total of 860,832.