Q: What is the sum of all factors of the number 420,031,240 excluding 420,031,240?

A: 580,633,040

Why is 580,633,040 the sum of all factors of 420,031,240, excluding 420,031,240?

The factors of the number 420,031,240 are: 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 617693, 1235386, 2470772, 3088465, 4941544, 6176930, 10500781, 12353860, 21001562, 24707720, 42003124, 52503905, 84006248, 105007810, 210015620, 420031240.

If you add them up, you will get the total of 420,031,820. Now subtract 420,031,240 to get 580,633,040