Q: What is the sum of all factors of the number 9,180 excluding 9,180?

A: 21,060

Why is 21,060 the sum of all factors of 9,180, excluding 9,180?

The factors of the number 9,180 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 85, 90, 102, 108, 135, 153, 170, 180, 204, 255, 270, 306, 340, 459, 510, 540, 612, 765, 918, 1020, 1530, 1836, 2295, 3060, 4590, 9180.

If you add them up, you will get the total of 9,201. Now subtract 9,180 to get 21,060