Q: What is the sum of all factors of the number 309,825 excluding 309,825?

A: 300,069

Why is 300,069 the sum of all factors of 309,825, excluding 309,825?

The factors of the number 309,825 are: 1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 225, 243, 255, 405, 425, 459, 675, 729, 765, 1215, 1275, 1377, 2025, 2295, 3645, 3825, 4131, 6075, 6885, 11475, 12393, 18225, 20655, 34425, 61965, 103275, 309825.

If you add them up, you will get the total of 310,125. Now subtract 309,825 to get 300,069