Q: What is the sum of all factors of the number 105,245,280 including 105,245,280?

Why is 420,323,904 the sum of all factors of 105,245,280, including 105,245,280?

The factors of the number 105,245,280 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 53, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 106, 112, 120, 126, 140, 144, 159, 160, 168, 180, 197, 210, 212, 224, 240, 252, 265, 280, 288, 315, 318, 336, 360, 371, 394, 420, 424, 477, 480, 504, 530, 560, 591, 630, 636, 672, 720, 742, 788, 795, 840, 848, 954, 985, 1008, 1060, 1113, 1120, 1182, 1260, 1272, 1379, 1440, 1484, 1576, 1590, 1680, 1696, 1773, 1855, 1908, 1970, 2016, 2120, 2226, 2364, 2385, 2520, 2544, 2758, 2955, 2968, 3152, 3180, 3339, 3360, 3546, 3710, 3816, 3940, 4137, 4240, 4452, 4728, 4770, 5040, 5088, 5516, 5565, 5910, 5936, 6304, 6360, 6678, 6895, 7092, 7420, 7632, 7880, 8274, 8480, 8865, 8904, 9456, 9540, 10080, 10441, 11032, 11130, 11820, 11872, 12411, 12720, 13356, 13790, 14184, 14840, 15264, 15760, 16548, 16695, 17730, 17808, 18912, 19080, 20685, 20882, 22064, 22260, 23640, 24822, 25440, 26712, 27580, 28368, 29680, 31323, 31520, 33096, 33390, 35460, 35616, 38160, 41370, 41764, 44128, 44520, 47280, 49644, 52205, 53424, 55160, 56736, 59360, 62055, 62646, 66192, 66780, 70920, 73087, 76320, 82740, 83528, 89040, 93969, 94560, 99288, 104410, 106848, 110320, 124110, 125292, 132384, 133560, 141840, 146174, 156615, 165480, 167056, 178080, 187938, 198576, 208820, 219261, 220640, 248220, 250584, 267120, 283680, 292348, 313230, 330960, 334112, 365435, 375876, 397152, 417640, 438522, 469845, 496440, 501168, 534240, 584696, 626460, 657783, 661920, 730870, 751752, 835280, 877044, 939690, 992880, 1002336, 1096305, 1169392, 1252920, 1315566, 1461740, 1503504, 1670560, 1754088, 1879380, 1985760, 2192610, 2338784, 2505840, 2631132, 2923480, 3007008, 3288915, 3508176, 3758760, 4385220, 5011680, 5262264, 5846960, 6577830, 7016352, 7517520, 8770440, 10524528, 11693920, 13155660, 15035040, 17540880, 21049056, 26311320, 35081760, 52622640, 105245280.

If you add them up, you will get the total of 420,323,904.

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