Q: What is the sum of all factors of the number 20,210,400 excluding 20,210,400?

Why is 61,440,624 the sum of all factors of 20,210,400, excluding 20,210,400?

The factors of the number 20,210,400 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 28, 30, 32, 35, 36, 40, 42, 45, 48, 50, 56, 60, 63, 70, 72, 75, 80, 84, 90, 96, 100, 105, 112, 120, 126, 140, 144, 150, 160, 168, 175, 180, 200, 210, 224, 225, 240, 252, 280, 288, 300, 315, 336, 350, 360, 400, 401, 420, 450, 480, 504, 525, 560, 600, 630, 672, 700, 720, 800, 802, 840, 900, 1008, 1050, 1120, 1200, 1203, 1260, 1400, 1440, 1575, 1604, 1680, 1800, 2005, 2016, 2100, 2400, 2406, 2520, 2800, 2807, 3150, 3208, 3360, 3600, 3609, 4010, 4200, 4812, 5040, 5600, 5614, 6015, 6300, 6416, 7200, 7218, 8020, 8400, 8421, 9624, 10025, 10080, 11228, 12030, 12600, 12832, 14035, 14436, 16040, 16800, 16842, 18045, 19248, 20050, 22456, 24060, 25200, 25263, 28070, 28872, 30075, 32080, 33684, 36090, 38496, 40100, 42105, 44912, 48120, 50400, 50526, 56140, 57744, 60150, 64160, 67368, 70175, 72180, 80200, 84210, 89824, 90225, 96240, 101052, 112280, 115488, 120300, 126315, 134736, 140350, 144360, 160400, 168420, 180450, 192480, 202104, 210525, 224560, 240600, 252630, 269472, 280700, 288720, 320800, 336840, 360900, 404208, 421050, 449120, 481200, 505260, 561400, 577440, 631575, 673680, 721800, 808416, 842100, 962400, 1010520, 1122800, 1263150, 1347360, 1443600, 1684200, 2021040, 2245600, 2526300, 2887200, 3368400, 4042080, 5052600, 6736800, 10105200, 20210400.

If you add them up, you will get the total of 20,210,461. Now subtract 20,210,400 to get 61,440,624

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