20854979880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{10289}}^1$

素因数の和:10456

約数の個数: 256

約数和(自身を含む): 75866112000

約数和(自身を除く): 55011132120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 127, 133, 140, 152, 168, 190, 210, 228, 254, 266, 280, 285, 380, 381, 399, 420, 456, 508, 532, 570, 635, 665, 760, 762, 798, 840, 889, 1016, 1064, 1140, 1270, 1330, 1524, 1596, 1778, 1905, 1995, 2280, 2413, 2540, 2660, 2667, 3048, 3192, 3556, 3810, 3990, 4445, 4826, 5080, 5320, 5334, 7112, 7239, 7620, 7980, 8890, 9652, 10289, 10668, 12065, 13335, 14478, 15240, 15960, 16891, 17780, 19304, 20578, 21336, 24130, 26670, 28956, 30867, 33782, 35560, 36195, 41156, 48260, 50673, 51445, 53340, 57912, 61734, 67564, 72023, 72390, 82312, 84455, 96520, 101346, 102890, 106680, 123468, 135128, 144046, 144780, 154335, 168910, 195491, 202692, 205780, 216069, 246936, 253365, 288092, 289560, 308670, 337820, 360115, 390982, 405384, 411560, 432138, 506730, 576184, 586473, 617340, 675640, 720230, 781964, 864276, 977455, 1013460, 1080345, 1172946, 1234680, 1306703, 1368437, 1440460, 1563928, 1728552, 1954910, 2026920, 2160690, 2345892, 2613406, 2736874, 2880920, 2932365, 3909820, 3920109, 4105311, 4321380, 4691784, 5226812, 5473748, 5864730, 6533515, 6842185, 7819640, 7840218, 8210622, 8642760, 9146921, 10453624, 10947496, 11729460, 13067030, 13684370, 15680436, 16421244, 18293842, 19600545, 20526555, 23458920, 24827357, 26134060, 27368740, 27440763, 31360872, 32842488, 36587684, 39201090, 41053110, 45734605, 49654714, 52268120, 54737480, 54881526, 73175368, 74482071, 78402180, 82106220, 91469210, 99309428, 109763052, 124136785, 137203815, 148964142, 156804360, 164212440, 173791499, 182938420, 198618856, 219526104, 248273570, 274407630, 297928284, 347582998, 365876840, 372410355, 496547140, 521374497, 548815260, 595856568, 695165996, 744820710, 868957495, 993094280, 1042748994, 1097630520, 1390331992, 1489641420, 1737914990, 2085497988, 2606872485, 2979282840, 3475829980, 4170995976, 5213744970, 6951659960, 10427489940, 20854979880]

約数ペア:

[(1, 20854979880), (2, 10427489940), (3, 6951659960), (4, 5213744970), (5, 4170995976), (6, 3475829980), (7, 2979282840), (8, 2606872485), (10, 2085497988), (12, 1737914990), (14, 1489641420), (15, 1390331992), (19, 1097630520), (20, 1042748994), (21, 993094280), (24, 868957495), (28, 744820710), (30, 695165996), (35, 595856568), (38, 548815260), (40, 521374497), (42, 496547140), (56, 372410355), (57, 365876840), (60, 347582998), (70, 297928284), (76, 274407630), (84, 248273570), (95, 219526104), (105, 198618856), (114, 182938420), (120, 173791499), (127, 164212440), (133, 156804360), (140, 148964142), (152, 137203815), (168, 124136785), (190, 109763052), (210, 99309428), (228, 91469210), (254, 82106220), (266, 78402180), (280, 74482071), (285, 73175368), (380, 54881526), (381, 54737480), (399, 52268120), (420, 49654714), (456, 45734605), (508, 41053110), (532, 39201090), (570, 36587684), (635, 32842488), (665, 31360872), (760, 27440763), (762, 27368740), (798, 26134060), (840, 24827357), (889, 23458920), (1016, 20526555), (1064, 19600545), (1140, 18293842), (1270, 16421244), (1330, 15680436), (1524, 13684370), (1596, 13067030), (1778, 11729460), (1905, 10947496), (1995, 10453624), (2280, 9146921), (2413, 8642760), (2540, 8210622), (2660, 7840218), (2667, 7819640), (3048, 6842185), (3192, 6533515), (3556, 5864730), (3810, 5473748), (3990, 5226812), (4445, 4691784), (4826, 4321380), (5080, 4105311), (5320, 3920109), (5334, 3909820), (7112, 2932365), (7239, 2880920), (7620, 2736874), (7980, 2613406), (8890, 2345892), (9652, 2160690), (10289, 2026920), (10668, 1954910), (12065, 1728552), (13335, 1563928), (14478, 1440460), (15240, 1368437), (15960, 1306703), (16891, 1234680), (17780, 1172946), (19304, 1080345), (20578, 1013460), (21336, 977455), (24130, 864276), (26670, 781964), (28956, 720230), (30867, 675640), (33782, 617340), (35560, 586473), (36195, 576184), (41156, 506730), (48260, 432138), (50673, 411560), (51445, 405384), (53340, 390982), (57912, 360115), (61734, 337820), (67564, 308670), (72023, 289560), (72390, 288092), (82312, 253365), (84455, 246936), (96520, 216069), (101346, 205780), (102890, 202692), (106680, 195491), (123468, 168910), (135128, 154335), (144046, 144780)]