Q: What is the sum of all factors of the number 305,660 excluding 305,660?

A: 420,100

Why is 420,100 the sum of all factors of 305,660, excluding 305,660?

The factors of the number 305,660 are: 1, 2, 4, 5, 10, 17, 20, 29, 31, 34, 58, 62, 68, 85, 116, 124, 145, 155, 170, 290, 310, 340, 493, 527, 580, 620, 899, 986, 1054, 1798, 1972, 2108, 2465, 2635, 3596, 4495, 4930, 5270, 8990, 9860, 10540, 15283, 17980, 30566, 61132, 76415, 152830, 305660.

If you add them up, you will get the total of 306,080. Now subtract 305,660 to get 420,100