Q: What is the sum of all factors of the number 420,400 including 420,400?
A: 1,010,972
The factors of the number 420,400 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1051, 2102, 4204, 5255, 8408, 10510, 16816, 21020, 26275, 42040, 52550, 84080, 105100, 210200, 420400.
If you add them up, you will get the total of 1,010,972.