Q: What is the sum of all factors of the number 99,900 excluding 99,900?

A: 229,940

Why is 229,940 the sum of all factors of 99,900, excluding 99,900?

The factors of the number 99,900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 37, 45, 50, 54, 60, 74, 75, 90, 100, 108, 111, 135, 148, 150, 180, 185, 222, 225, 270, 300, 333, 370, 444, 450, 540, 555, 666, 675, 740, 900, 925, 999, 1110, 1332, 1350, 1665, 1850, 1998, 2220, 2700, 2775, 3330, 3700, 3996, 4995, 5550, 6660, 8325, 9990, 11100, 16650, 19980, 24975, 33300, 49950, 99900.

If you add them up, you will get the total of 100,129. Now subtract 99,900 to get 229,940