Q: What is the sum of all factors of the number 425,840 including 425,840?
A: 990,264
The factors of the number 425,840 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5323, 10646, 21292, 26615, 42584, 53230, 85168, 106460, 212920, 425840.
If you add them up, you will get the total of 990,264.