Q: What is the sum of all factors of the number 204,351,225 excluding 204,351,225?

A: 171,291,399

Why is 171,291,399 the sum of all factors of 204,351,225, excluding 204,351,225?

The factors of the number 204,351,225 are: 1, 3, 5, 13, 15, 25, 31, 39, 65, 75, 93, 155, 195, 325, 403, 465, 775, 975, 1209, 2015, 2325, 6045, 6761, 10075, 20283, 30225, 33805, 87893, 101415, 169025, 209591, 263679, 439465, 507075, 628773, 1047955, 1318395, 2197325, 2724683, 3143865, 5239775, 6591975, 8174049, 13623415, 15719325, 40870245, 68117075, 204351225.

If you add them up, you will get the total of 204,351,396. Now subtract 204,351,225 to get 171,291,399