Q: What is the sum of all factors of the number 212,360,665 excluding 212,360,665?

A: 72,987,431

Why is 72,987,431 the sum of all factors of 212,360,665, excluding 212,360,665?

The factors of the number 212,360,665 are: 1, 5, 11, 53, 55, 263, 265, 277, 583, 1315, 1385, 2893, 2915, 3047, 13939, 14465, 14681, 15235, 69695, 72851, 73405, 153329, 161491, 364255, 766645, 801361, 807455, 3861103, 4006805, 19305515, 42472133, 212360665.

If you add them up, you will get the total of 212,360,737. Now subtract 212,360,665 to get 72,987,431