Q: What is the sum of all factors of the number 520,221,020 excluding 520,221,020?

 A: 692,387,860

Why is 692,387,860 the sum of all factors of 520,221,020, excluding 520,221,020?

The factors of the number 520,221,020 are: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 163, 178, 220, 326, 356, 445, 652, 815, 890, 979, 1630, 1780, 1793, 1958, 3260, 3586, 3916, 4895, 7172, 8965, 9790, 14507, 17930, 19580, 26569, 29014, 35860, 53138, 58028, 72535, 106276, 132845, 145070, 159577, 265690, 290140, 292259, 319154, 531380, 584518, 638308, 797885, 1169036, 1461295, 1595770, 2364641, 2922590, 3191540, 4729282, 5845180, 9458564, 11823205, 23646410, 26011051, 47292820, 52022102, 104044204, 130055255, 260110510, 520221020.

If you add them up, you will get the total of 520,221,712. Now subtract 520,221,020 to get 692,387,860


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