Q: What is the sum of all factors of the number 521,380 excluding 521,380?
A: 587,420
The factors of the number 521,380 are: 1, 2, 4, 5, 10, 20, 131, 199, 262, 398, 524, 655, 796, 995, 1310, 1990, 2620, 3980, 26069, 52138, 104276, 130345, 260690, 521380.
If you add them up, you will get the total of 521,967. Now subtract 521,380 to get 587,420