Q: What is the sum of all factors of the number 309,000 excluding 309,000?

A: 664,440

Why is 664,440 the sum of all factors of 309,000, excluding 309,000?

The factors of the number 309,000 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 103, 120, 125, 150, 200, 206, 250, 300, 309, 375, 412, 500, 515, 600, 618, 750, 824, 1000, 1030, 1236, 1500, 1545, 2060, 2472, 2575, 3000, 3090, 4120, 5150, 6180, 7725, 10300, 12360, 12875, 15450, 20600, 25750, 30900, 38625, 51500, 61800, 77250, 103000, 154500, 309000.

If you add them up, you will get the total of 309,664. Now subtract 309,000 to get 664,440