Q: What is the sum of all factors of the number 280,520,670 excluding 280,520,670?

A: 395,179,458

Why is 395,179,458 the sum of all factors of 280,520,670, excluding 280,520,670?

The factors of the number 280,520,670 are: 1, 2, 3, 5, 6, 10, 15, 30, 277, 554, 831, 1385, 1662, 2770, 4155, 8310, 33757, 67514, 101271, 168785, 202542, 337570, 506355, 1012710, 9350689, 18701378, 28052067, 46753445, 56104134, 93506890, 140260335, 280520670.

If you add them up, you will get the total of 280,521,065. Now subtract 280,520,670 to get 395,179,458