20781609600

素因数分解:

$2^7\times 3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{21017}}^1$

素因数の和:21147

約数の個数: 192

約数和(自身を含む): 69117272640

約数和(自身を除く): 48335663040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 103, 120, 128, 150, 160, 192, 200, 206, 240, 300, 309, 320, 384, 400, 412, 480, 515, 600, 618, 640, 800, 824, 960, 1030, 1200, 1236, 1545, 1600, 1648, 1920, 2060, 2400, 2472, 2575, 3090, 3200, 3296, 4120, 4800, 4944, 5150, 6180, 6592, 7725, 8240, 9600, 9888, 10300, 12360, 13184, 15450, 16480, 19776, 20600, 21017, 24720, 30900, 32960, 39552, 41200, 42034, 49440, 61800, 63051, 65920, 82400, 84068, 98880, 105085, 123600, 126102, 164800, 168136, 197760, 210170, 247200, 252204, 315255, 329600, 336272, 420340, 494400, 504408, 525425, 630510, 672544, 840680, 988800, 1008816, 1050850, 1261020, 1345088, 1576275, 1681360, 2017632, 2101700, 2164751, 2522040, 2690176, 3152550, 3362720, 4035264, 4203400, 4329502, 5044080, 6305100, 6494253, 6725440, 8070528, 8406800, 8659004, 10088160, 10823755, 12610200, 12988506, 13450880, 16813600, 17318008, 20176320, 21647510, 25220400, 25977012, 32471265, 33627200, 34636016, 40352640, 43295020, 50440800, 51954024, 54118775, 64942530, 67254400, 69272032, 86590040, 100881600, 103908048, 108237550, 129885060, 138544064, 162356325, 173180080, 201763200, 207816096, 216475100, 259770120, 277088128, 324712650, 346360160, 415632192, 432950200, 519540240, 649425300, 692720320, 831264384, 865900400, 1039080480, 1298850600, 1385440640, 1731800800, 2078160960, 2597701200, 3463601600, 4156321920, 5195402400, 6927203200, 10390804800, 20781609600]

約数ペア:

[(1, 20781609600), (2, 10390804800), (3, 6927203200), (4, 5195402400), (5, 4156321920), (6, 3463601600), (8, 2597701200), (10, 2078160960), (12, 1731800800), (15, 1385440640), (16, 1298850600), (20, 1039080480), (24, 865900400), (25, 831264384), (30, 692720320), (32, 649425300), (40, 519540240), (48, 432950200), (50, 415632192), (60, 346360160), (64, 324712650), (75, 277088128), (80, 259770120), (96, 216475100), (100, 207816096), (103, 201763200), (120, 173180080), (128, 162356325), (150, 138544064), (160, 129885060), (192, 108237550), (200, 103908048), (206, 100881600), (240, 86590040), (300, 69272032), (309, 67254400), (320, 64942530), (384, 54118775), (400, 51954024), (412, 50440800), (480, 43295020), (515, 40352640), (600, 34636016), (618, 33627200), (640, 32471265), (800, 25977012), (824, 25220400), (960, 21647510), (1030, 20176320), (1200, 17318008), (1236, 16813600), (1545, 13450880), (1600, 12988506), (1648, 12610200), (1920, 10823755), (2060, 10088160), (2400, 8659004), (2472, 8406800), (2575, 8070528), (3090, 6725440), (3200, 6494253), (3296, 6305100), (4120, 5044080), (4800, 4329502), (4944, 4203400), (5150, 4035264), (6180, 3362720), (6592, 3152550), (7725, 2690176), (8240, 2522040), (9600, 2164751), (9888, 2101700), (10300, 2017632), (12360, 1681360), (13184, 1576275), (15450, 1345088), (16480, 1261020), (19776, 1050850), (20600, 1008816), (21017, 988800), (24720, 840680), (30900, 672544), (32960, 630510), (39552, 525425), (41200, 504408), (42034, 494400), (49440, 420340), (61800, 336272), (63051, 329600), (65920, 315255), (82400, 252204), (84068, 247200), (98880, 210170), (105085, 197760), (123600, 168136), (126102, 164800)]