Q: What is the sum of all factors of the number 255,987 including 255,987?
A: 400,000
The factors of the number 255,987 are: 1, 3, 9, 19, 27, 57, 171, 499, 513, 1497, 4491, 9481, 13473, 28443, 85329, 255987.
If you add them up, you will get the total of 400,000.