Q: What is the sum of all factors of the number 30,870 excluding 30,870?

A: 62,730

Why is 62,730 the sum of all factors of 30,870, excluding 30,870?

The factors of the number 30,870 are: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 343, 441, 490, 630, 686, 735, 882, 1029, 1470, 1715, 2058, 2205, 3087, 3430, 4410, 5145, 6174, 10290, 15435, 30870.

If you add them up, you will get the total of 30,932. Now subtract 30,870 to get 62,730