Q: What is the sum of all factors of the number 204,420,321 excluding 204,420,321?

A: 146,094,879

Why is 146,094,879 the sum of all factors of 204,420,321, excluding 204,420,321?

The factors of the number 204,420,321 are: 1, 3, 7, 9, 21, 27, 63, 79, 189, 237, 553, 711, 1659, 2133, 4977, 13691, 14931, 41073, 95837, 123219, 287511, 369657, 862533, 1081589, 2587599, 3244767, 7571123, 9734301, 22713369, 29202903, 68140107, 204420321.

If you add them up, you will get the total of 204,420,467. Now subtract 204,420,321 to get 146,094,879