Q: What is the sum of all factors of the number 520,313,402 excluding 520,313,402?

A: 398,809,798

Why is 398,809,798 the sum of all factors of 520,313,402, excluding 520,313,402?

The factors of the number 520,313,402 are: 1, 2, 7, 14, 53, 89, 106, 178, 371, 623, 742, 1246, 4717, 7879, 9434, 15758, 33019, 55153, 66038, 110306, 417587, 701231, 835174, 1402462, 2923109, 4908617, 5846218, 9817234, 37165243, 74330486, 260156701, 520313402.

If you add them up, you will get the total of 520,313,800. Now subtract 520,313,402 to get 398,809,798