Q: What is the sum of all factors of the number 199,820 including 199,820?
A: 428,064
The factors of the number 199,820 are: 1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 388, 412, 485, 515, 970, 1030, 1940, 2060, 9991, 19982, 39964, 49955, 99910, 199820.
If you add them up, you will get the total of 428,064.