21577920

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:72

約数の個数: 336

約数和(自身を含む): 89245440

約数和(自身を除く): 67667520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 19, 20, 21, 24, 26, 28, 30, 32, 35, 38, 39, 40, 42, 48, 52, 56, 57, 60, 64, 65, 70, 76, 78, 80, 84, 91, 95, 96, 104, 105, 112, 114, 120, 130, 133, 140, 152, 156, 160, 168, 169, 182, 190, 192, 195, 208, 210, 224, 228, 240, 247, 260, 266, 273, 280, 285, 304, 312, 320, 336, 338, 364, 380, 390, 399, 416, 420, 448, 455, 456, 480, 494, 507, 520, 532, 546, 560, 570, 608, 624, 665, 672, 676, 728, 741, 760, 780, 798, 832, 840, 845, 910, 912, 960, 988, 1014, 1040, 1064, 1092, 1120, 1140, 1183, 1216, 1235, 1248, 1330, 1344, 1352, 1365, 1456, 1482, 1520, 1560, 1596, 1680, 1690, 1729, 1820, 1824, 1976, 1995, 2028, 2080, 2128, 2184, 2240, 2280, 2366, 2470, 2496, 2535, 2660, 2704, 2730, 2912, 2964, 3040, 3120, 3192, 3211, 3360, 3380, 3458, 3549, 3640, 3648, 3705, 3952, 3990, 4056, 4160, 4256, 4368, 4560, 4732, 4940, 5070, 5187, 5320, 5408, 5460, 5824, 5915, 5928, 6080, 6240, 6384, 6422, 6720, 6760, 6916, 7098, 7280, 7410, 7904, 7980, 8112, 8512, 8645, 8736, 9120, 9464, 9633, 9880, 10140, 10374, 10640, 10816, 10920, 11830, 11856, 12480, 12768, 12844, 13520, 13832, 14196, 14560, 14820, 15808, 15960, 16055, 16224, 17290, 17472, 17745, 18240, 18928, 19266, 19760, 20280, 20748, 21280, 21840, 22477, 23660, 23712, 25536, 25688, 25935, 27040, 27664, 28392, 29120, 29640, 31920, 32110, 32448, 34580, 35490, 37856, 38532, 39520, 40560, 41496, 42560, 43680, 44954, 47320, 47424, 48165, 51376, 51870, 54080, 55328, 56784, 59280, 63840, 64220, 67431, 69160, 70980, 75712, 77064, 79040, 81120, 82992, 87360, 89908, 94640, 96330, 102752, 103740, 110656, 112385, 113568, 118560, 127680, 128440, 134862, 138320, 141960, 154128, 162240, 165984, 179816, 189280, 192660, 205504, 207480, 224770, 227136, 237120, 256880, 269724, 276640, 283920, 308256, 331968, 337155, 359632, 378560, 385320, 414960, 449540, 513760, 539448, 553280, 567840, 616512, 674310, 719264, 770640, 829920, 899080, 1027520, 1078896, 1135680, 1348620, 1438528, 1541280, 1659840, 1798160, 2157792, 2697240, 3082560, 3596320, 4315584, 5394480, 7192640, 10788960, 21577920]

約数ペア:

[(1, 21577920), (2, 10788960), (3, 7192640), (4, 5394480), (5, 4315584), (6, 3596320), (7, 3082560), (8, 2697240), (10, 2157792), (12, 1798160), (13, 1659840), (14, 1541280), (15, 1438528), (16, 1348620), (19, 1135680), (20, 1078896), (21, 1027520), (24, 899080), (26, 829920), (28, 770640), (30, 719264), (32, 674310), (35, 616512), (38, 567840), (39, 553280), (40, 539448), (42, 513760), (48, 449540), (52, 414960), (56, 385320), (57, 378560), (60, 359632), (64, 337155), (65, 331968), (70, 308256), (76, 283920), (78, 276640), (80, 269724), (84, 256880), (91, 237120), (95, 227136), (96, 224770), (104, 207480), (105, 205504), (112, 192660), (114, 189280), (120, 179816), (130, 165984), (133, 162240), (140, 154128), (152, 141960), (156, 138320), (160, 134862), (168, 128440), (169, 127680), (182, 118560), (190, 113568), (192, 112385), (195, 110656), (208, 103740), (210, 102752), (224, 96330), (228, 94640), (240, 89908), (247, 87360), (260, 82992), (266, 81120), (273, 79040), (280, 77064), (285, 75712), (304, 70980), (312, 69160), (320, 67431), (336, 64220), (338, 63840), (364, 59280), (380, 56784), (390, 55328), (399, 54080), (416, 51870), (420, 51376), (448, 48165), (455, 47424), (456, 47320), (480, 44954), (494, 43680), (507, 42560), (520, 41496), (532, 40560), (546, 39520), (560, 38532), (570, 37856), (608, 35490), (624, 34580), (665, 32448), (672, 32110), (676, 31920), (728, 29640), (741, 29120), (760, 28392), (780, 27664), (798, 27040), (832, 25935), (840, 25688), (845, 25536), (910, 23712), (912, 23660), (960, 22477), (988, 21840), (1014, 21280), (1040, 20748), (1064, 20280), (1092, 19760), (1120, 19266), (1140, 18928), (1183, 18240), (1216, 17745), (1235, 17472), (1248, 17290), (1330, 16224), (1344, 16055), (1352, 15960), (1365, 15808), (1456, 14820), (1482, 14560), (1520, 14196), (1560, 13832), (1596, 13520), (1680, 12844), (1690, 12768), (1729, 12480), (1820, 11856), (1824, 11830), (1976, 10920), (1995, 10816), (2028, 10640), (2080, 10374), (2128, 10140), (2184, 9880), (2240, 9633), (2280, 9464), (2366, 9120), (2470, 8736), (2496, 8645), (2535, 8512), (2660, 8112), (2704, 7980), (2730, 7904), (2912, 7410), (2964, 7280), (3040, 7098), (3120, 6916), (3192, 6760), (3211, 6720), (3360, 6422), (3380, 6384), (3458, 6240), (3549, 6080), (3640, 5928), (3648, 5915), (3705, 5824), (3952, 5460), (3990, 5408), (4056, 5320), (4160, 5187), (4256, 5070), (4368, 4940), (4560, 4732)]