Q: What is the sum of all factors of the number 642,004,665 excluding 642,004,665?

A: 412,904,775

Why is 412,904,775 the sum of all factors of 642,004,665, excluding 642,004,665?

The factors of the number 642,004,665 are: 1, 3, 5, 15, 59, 103, 177, 295, 309, 515, 885, 1545, 6077, 7043, 18231, 21129, 30385, 35215, 91155, 105645, 415537, 725429, 1246611, 2077685, 2176287, 3627145, 6233055, 10881435, 42800311, 128400933, 214001555, 642004665.

If you add them up, you will get the total of 642,005,077. Now subtract 642,004,665 to get 412,904,775