Q: What is the sum of all factors of the number 217,507,530 excluding 217,507,530?

A: 305,205,558

Why is 305,205,558 the sum of all factors of 217,507,530, excluding 217,507,530?

The factors of the number 217,507,530 are: 1, 2, 3, 5, 6, 10, 15, 30, 821, 1642, 2463, 4105, 4926, 8210, 8831, 12315, 17662, 24630, 26493, 44155, 52986, 88310, 132465, 264930, 7250251, 14500502, 21750753, 36251255, 43501506, 72502510, 108753765, 217507530.

If you add them up, you will get the total of 217,507,835. Now subtract 217,507,530 to get 305,205,558