Q: What is the sum of all factors of the number 78,780 excluding 78,780?

A: 161,124

Why is 161,124 the sum of all factors of 78,780, excluding 78,780?

The factors of the number 78,780 are: 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 101, 130, 156, 195, 202, 260, 303, 390, 404, 505, 606, 780, 1010, 1212, 1313, 1515, 2020, 2626, 3030, 3939, 5252, 6060, 6565, 7878, 13130, 15756, 19695, 26260, 39390, 78780.

If you add them up, you will get the total of 78,941. Now subtract 78,780 to get 161,124