Q: What is the sum of all factors of the number 20,120,310 excluding 20,120,310?

 A: 40,420,170

Why is 40,420,170 the sum of all factors of 20,120,310, excluding 20,120,310?

The factors of the number 20,120,310 are: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 109, 126, 210, 218, 293, 315, 327, 545, 586, 630, 654, 763, 879, 981, 1090, 1465, 1526, 1635, 1758, 1962, 2051, 2289, 2637, 2930, 3270, 3815, 4102, 4395, 4578, 4905, 5274, 6153, 6867, 7630, 8790, 9810, 10255, 11445, 12306, 13185, 13734, 18459, 20510, 22890, 26370, 30765, 31937, 34335, 36918, 61530, 63874, 68670, 92295, 95811, 159685, 184590, 191622, 223559, 287433, 319370, 447118, 479055, 574866, 670677, 958110, 1117795, 1341354, 1437165, 2012031, 2235590, 2874330, 3353385, 4024062, 6706770, 10060155, 20120310.

If you add them up, you will get the total of 20,120,350. Now subtract 20,120,310 to get 40,420,170


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