Q: What is the sum of all factors of the number 820,280,136 excluding 820,280,136?

A: 1,388,167,224

Why is 1,388,167,224 the sum of all factors of 820,280,136, excluding 820,280,136?

The factors of the number 820,280,136 are: 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 2629103, 5258206, 7887309, 10516412, 15774618, 21032824, 31549236, 34178339, 63098472, 68356678, 102535017, 136713356, 205070034, 273426712, 410140068, 820280136.

If you add them up, you will get the total of 820,280,137. Now subtract 820,280,136 to get 1,388,167,224