Q: What is the sum of all factors of the number 256,115,655 excluding 256,115,655?

A: 200,465,145

Why is 200,465,145 the sum of all factors of 256,115,655, excluding 256,115,655?

The factors of the number 256,115,655 are: 1, 3, 5, 9, 15, 27, 45, 135, 389, 1167, 1945, 3501, 4877, 5835, 10503, 14631, 17505, 24385, 43893, 52515, 73155, 131679, 219465, 658395, 1897153, 5691459, 9485765, 17074377, 28457295, 51223131, 85371885, 256115655.

If you add them up, you will get the total of 256,115,855. Now subtract 256,115,655 to get 200,465,145