Q: What is the sum of all factors of the number 197,780 excluding 197,780?

A: 286,060

Why is 286,060 the sum of all factors of 197,780, excluding 197,780?

The factors of the number 197,780 are: 1, 2, 4, 5, 10, 11, 20, 22, 29, 31, 44, 55, 58, 62, 110, 116, 124, 145, 155, 220, 290, 310, 319, 341, 580, 620, 638, 682, 899, 1276, 1364, 1595, 1705, 1798, 3190, 3410, 3596, 4495, 6380, 6820, 8990, 9889, 17980, 19778, 39556, 49445, 98890, 197780.

If you add them up, you will get the total of 198,066. Now subtract 197,780 to get 286,060