20989017728

素因数分解:

$2^7\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:519

約数の個数: 256

約数和(自身を含む): 51889766400

約数和(自身を除く): 30900748672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 31, 32, 56, 58, 62, 64, 71, 112, 116, 124, 128, 142, 203, 217, 224, 232, 248, 284, 367, 406, 434, 448, 464, 496, 497, 568, 734, 812, 868, 896, 899, 928, 992, 994, 1136, 1468, 1624, 1736, 1798, 1856, 1984, 1988, 2059, 2201, 2272, 2569, 2936, 3248, 3472, 3596, 3712, 3968, 3976, 4118, 4402, 4544, 5138, 5872, 6293, 6496, 6944, 7192, 7952, 8236, 8804, 9088, 10276, 10643, 11377, 11744, 12586, 12992, 13888, 14384, 14413, 15407, 15904, 16472, 17608, 20552, 21286, 22754, 23488, 25172, 25984, 26057, 27776, 28768, 28826, 30814, 31808, 32944, 35216, 41104, 42572, 45508, 46976, 50344, 52114, 57536, 57652, 61628, 63616, 63829, 65888, 70432, 74501, 79639, 82208, 85144, 91016, 100688, 104228, 115072, 115304, 123256, 127658, 131776, 140864, 149002, 159278, 164416, 170288, 182032, 182399, 201376, 208456, 230608, 246512, 255316, 263552, 281728, 298004, 318556, 328832, 329933, 340576, 364064, 364798, 402752, 416912, 446803, 461216, 493024, 510632, 596008, 637112, 659866, 681152, 728128, 729596, 755653, 805504, 807767, 833824, 893606, 922432, 986048, 1021264, 1192016, 1274224, 1319732, 1362304, 1456256, 1459192, 1511306, 1615534, 1667648, 1787212, 1844864, 1972096, 2042528, 2309531, 2384032, 2548448, 2639464, 2918384, 3022612, 3231068, 3335296, 3574424, 4085056, 4619062, 4768064, 5096896, 5278928, 5289571, 5654369, 5836768, 6045224, 6462136, 7148848, 8170112, 9238124, 9536128, 10193792, 10557856, 10579142, 11308738, 11673536, 12090448, 12924272, 14297696, 18476248, 21115712, 21158284, 22617476, 23347072, 23425243, 24180896, 25848544, 28595392, 36952496, 42231424, 42316568, 45234952, 46850486, 48361792, 51697088, 57190784, 73904992, 84633136, 90469904, 93700972, 96723584, 103394176, 147809984, 163976701, 169266272, 180939808, 187401944, 295619968, 327953402, 338532544, 361879616, 374803888, 655906804, 677065088, 723759232, 749607776, 1311813608, 1499215552, 2623627216, 2998431104, 5247254432, 10494508864, 20989017728]

約数ペア:

[(1, 20989017728), (2, 10494508864), (4, 5247254432), (7, 2998431104), (8, 2623627216), (14, 1499215552), (16, 1311813608), (28, 749607776), (29, 723759232), (31, 677065088), (32, 655906804), (56, 374803888), (58, 361879616), (62, 338532544), (64, 327953402), (71, 295619968), (112, 187401944), (116, 180939808), (124, 169266272), (128, 163976701), (142, 147809984), (203, 103394176), (217, 96723584), (224, 93700972), (232, 90469904), (248, 84633136), (284, 73904992), (367, 57190784), (406, 51697088), (434, 48361792), (448, 46850486), (464, 45234952), (496, 42316568), (497, 42231424), (568, 36952496), (734, 28595392), (812, 25848544), (868, 24180896), (896, 23425243), (899, 23347072), (928, 22617476), (992, 21158284), (994, 21115712), (1136, 18476248), (1468, 14297696), (1624, 12924272), (1736, 12090448), (1798, 11673536), (1856, 11308738), (1984, 10579142), (1988, 10557856), (2059, 10193792), (2201, 9536128), (2272, 9238124), (2569, 8170112), (2936, 7148848), (3248, 6462136), (3472, 6045224), (3596, 5836768), (3712, 5654369), (3968, 5289571), (3976, 5278928), (4118, 5096896), (4402, 4768064), (4544, 4619062), (5138, 4085056), (5872, 3574424), (6293, 3335296), (6496, 3231068), (6944, 3022612), (7192, 2918384), (7952, 2639464), (8236, 2548448), (8804, 2384032), (9088, 2309531), (10276, 2042528), (10643, 1972096), (11377, 1844864), (11744, 1787212), (12586, 1667648), (12992, 1615534), (13888, 1511306), (14384, 1459192), (14413, 1456256), (15407, 1362304), (15904, 1319732), (16472, 1274224), (17608, 1192016), (20552, 1021264), (21286, 986048), (22754, 922432), (23488, 893606), (25172, 833824), (25984, 807767), (26057, 805504), (27776, 755653), (28768, 729596), (28826, 728128), (30814, 681152), (31808, 659866), (32944, 637112), (35216, 596008), (41104, 510632), (42572, 493024), (45508, 461216), (46976, 446803), (50344, 416912), (52114, 402752), (57536, 364798), (57652, 364064), (61628, 340576), (63616, 329933), (63829, 328832), (65888, 318556), (70432, 298004), (74501, 281728), (79639, 263552), (82208, 255316), (85144, 246512), (91016, 230608), (100688, 208456), (104228, 201376), (115072, 182399), (115304, 182032), (123256, 170288), (127658, 164416), (131776, 159278), (140864, 149002)]