Q: What is the sum of all factors of the number 320,053,515 excluding 320,053,515?

A: 218,143,221

Why is 218,143,221 the sum of all factors of 320,053,515, excluding 320,053,515?

The factors of the number 320,053,515 are: 1, 3, 5, 15, 37, 43, 111, 129, 185, 215, 555, 645, 1591, 4773, 7955, 13411, 23865, 40233, 67055, 201165, 496207, 576673, 1488621, 1730019, 2481035, 2883365, 7443105, 8650095, 21336901, 64010703, 106684505, 320053515.

If you add them up, you will get the total of 320,053,733. Now subtract 320,053,515 to get 218,143,221