Q: What is the sum of all factors of the number 666,563,456 excluding 666,563,456?

A: 763,507,144

Why is 763,507,144 the sum of all factors of 666,563,456, excluding 666,563,456?

The factors of the number 666,563,456 are: 1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 400579, 801158, 1602316, 3204632, 5207527, 6409264, 10415054, 12818528, 20830108, 25637056, 41660216, 51274112, 83320432, 166640864, 333281728, 666563456.

If you add them up, you will get the total of 666,564,219. Now subtract 666,563,456 to get 763,507,144