Q: What is the sum of all factors of the number 60,900 excluding 60,900?

A: 147,420

Why is 147,420 the sum of all factors of 60,900, excluding 60,900?

The factors of the number 60,900 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 29, 30, 35, 42, 50, 58, 60, 70, 75, 84, 87, 100, 105, 116, 140, 145, 150, 174, 175, 203, 210, 290, 300, 348, 350, 406, 420, 435, 525, 580, 609, 700, 725, 812, 870, 1015, 1050, 1218, 1450, 1740, 2030, 2100, 2175, 2436, 2900, 3045, 4060, 4350, 5075, 6090, 8700, 10150, 12180, 15225, 20300, 30450, 60900.

If you add them up, you will get the total of 61,047. Now subtract 60,900 to get 147,420