Q: What is the sum of all factors of the number 123,407,760 excluding 123,407,760?

Why is 358,704,240 the sum of all factors of 123,407,760, excluding 123,407,760?

The factors of the number 123,407,760 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 29, 30, 34, 35, 40, 42, 48, 51, 56, 58, 60, 68, 70, 80, 84, 85, 87, 102, 105, 112, 116, 119, 120, 136, 140, 145, 149, 168, 170, 174, 203, 204, 210, 232, 238, 240, 255, 272, 280, 290, 298, 336, 340, 348, 357, 406, 408, 420, 435, 447, 464, 476, 493, 510, 560, 580, 595, 596, 609, 680, 696, 714, 745, 812, 816, 840, 870, 894, 952, 986, 1015, 1020, 1043, 1160, 1190, 1192, 1218, 1360, 1392, 1428, 1479, 1490, 1624, 1680, 1740, 1785, 1788, 1904, 1972, 2030, 2040, 2086, 2235, 2320, 2380, 2384, 2436, 2465, 2533, 2856, 2958, 2980, 3045, 3129, 3248, 3451, 3480, 3570, 3576, 3944, 4060, 4080, 4172, 4321, 4470, 4760, 4872, 4930, 5066, 5215, 5712, 5916, 5960, 6090, 6258, 6902, 6960, 7140, 7152, 7395, 7599, 7888, 8120, 8344, 8642, 8940, 9520, 9744, 9860, 10132, 10353, 10430, 11832, 11920, 12180, 12516, 12665, 12963, 13804, 14280, 14790, 15198, 15645, 16240, 16688, 17255, 17284, 17731, 17880, 19720, 20264, 20706, 20860, 21605, 23664, 24360, 25032, 25330, 25926, 27608, 28560, 29580, 30247, 30396, 31290, 34510, 34568, 35462, 35760, 37995, 39440, 40528, 41412, 41720, 43210, 48720, 50064, 50660, 51765, 51852, 53193, 55216, 59160, 60494, 60792, 62580, 64815, 69020, 69136, 70924, 73457, 75990, 82824, 83440, 86420, 88655, 90741, 101320, 103530, 103704, 106386, 118320, 120988, 121584, 125160, 129630, 138040, 141848, 146914, 151235, 151980, 165648, 172840, 177310, 181482, 202640, 207060, 207408, 212772, 220371, 241976, 250320, 259260, 265965, 276080, 283696, 293828, 302470, 303960, 345680, 354620, 362964, 367285, 414120, 425544, 440742, 453705, 483952, 514199, 518520, 531930, 587656, 604940, 607920, 709240, 725928, 734570, 828240, 851088, 881484, 907410, 1028398, 1037040, 1063860, 1101855, 1175312, 1209880, 1418480, 1451856, 1469140, 1542597, 1762968, 1814820, 2056796, 2127720, 2203710, 2419760, 2570995, 2938280, 3085194, 3525936, 3629640, 4113592, 4255440, 4407420, 5141990, 5876560, 6170388, 7259280, 7712985, 8227184, 8814840, 10283980, 12340776, 15425970, 17629680, 20567960, 24681552, 30851940, 41135920, 61703880, 123407760.

If you add them up, you will get the total of 123,408,118. Now subtract 123,407,760 to get 358,704,240

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