Q: What is the sum of all factors of the number 255,123,435 excluding 255,123,435?

A: 212,307,477

Why is 212,307,477 the sum of all factors of 255,123,435, excluding 255,123,435?

The factors of the number 255,123,435 are: 1, 3, 5, 7, 15, 21, 35, 105, 577, 1731, 2885, 4039, 4211, 8655, 12117, 12633, 20195, 21055, 29477, 60585, 63165, 88431, 147385, 442155, 2429747, 7289241, 12148735, 17008229, 36446205, 51024687, 85041145, 255123435.

If you add them up, you will get the total of 255,123,647. Now subtract 255,123,435 to get 212,307,477