19918080

素因数分解:

$2^8\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:66

約数の個数: 432

約数和(自身を含む): 89281920

約数和(自身を除く): 69363840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24, 26, 28, 30, 32, 35, 36, 38, 39, 40, 42, 45, 48, 52, 56, 57, 60, 63, 64, 65, 70, 72, 76, 78, 80, 84, 90, 91, 95, 96, 104, 105, 112, 114, 117, 120, 126, 128, 130, 133, 140, 144, 152, 156, 160, 168, 171, 180, 182, 190, 192, 195, 208, 210, 224, 228, 234, 240, 247, 252, 256, 260, 266, 273, 280, 285, 288, 304, 312, 315, 320, 336, 342, 360, 364, 380, 384, 390, 399, 416, 420, 448, 455, 456, 468, 480, 494, 504, 520, 532, 546, 560, 570, 576, 585, 608, 624, 630, 640, 665, 672, 684, 720, 728, 741, 760, 768, 780, 798, 819, 832, 840, 855, 896, 910, 912, 936, 960, 988, 1008, 1040, 1064, 1092, 1120, 1140, 1152, 1170, 1197, 1216, 1235, 1248, 1260, 1280, 1330, 1344, 1365, 1368, 1440, 1456, 1482, 1520, 1560, 1596, 1638, 1664, 1680, 1710, 1729, 1792, 1820, 1824, 1872, 1920, 1976, 1995, 2016, 2080, 2128, 2184, 2223, 2240, 2280, 2304, 2340, 2394, 2432, 2470, 2496, 2520, 2660, 2688, 2730, 2736, 2880, 2912, 2964, 3040, 3120, 3192, 3276, 3328, 3360, 3420, 3458, 3640, 3648, 3705, 3744, 3840, 3952, 3990, 4032, 4095, 4160, 4256, 4368, 4446, 4480, 4560, 4680, 4788, 4864, 4940, 4992, 5040, 5187, 5320, 5376, 5460, 5472, 5760, 5824, 5928, 5985, 6080, 6240, 6384, 6552, 6720, 6840, 6916, 7280, 7296, 7410, 7488, 7904, 7980, 8064, 8190, 8320, 8512, 8645, 8736, 8892, 8960, 9120, 9360, 9576, 9880, 9984, 10080, 10374, 10640, 10920, 10944, 11115, 11520, 11648, 11856, 11970, 12160, 12480, 12768, 13104, 13440, 13680, 13832, 14560, 14592, 14820, 14976, 15561, 15808, 15960, 16128, 16380, 16640, 17024, 17290, 17472, 17784, 18240, 18720, 19152, 19760, 20160, 20748, 21280, 21840, 21888, 22230, 23296, 23712, 23940, 24320, 24960, 25536, 25935, 26208, 26880, 27360, 27664, 29120, 29640, 29952, 31122, 31616, 31920, 32760, 34048, 34580, 34944, 35568, 36480, 37440, 38304, 39520, 40320, 41496, 42560, 43680, 43776, 44460, 47424, 47880, 49920, 51072, 51870, 52416, 54720, 55328, 58240, 59280, 62244, 63232, 63840, 65520, 69160, 69888, 71136, 72960, 74880, 76608, 77805, 79040, 80640, 82992, 85120, 87360, 88920, 94848, 95760, 102144, 103740, 104832, 109440, 110656, 116480, 118560, 124488, 127680, 131040, 138320, 142272, 149760, 153216, 155610, 158080, 165984, 170240, 174720, 177840, 189696, 191520, 207480, 209664, 218880, 221312, 237120, 248976, 255360, 262080, 276640, 284544, 306432, 311220, 316160, 331968, 349440, 355680, 383040, 414960, 442624, 474240, 497952, 510720, 524160, 553280, 569088, 622440, 663936, 711360, 766080, 829920, 948480, 995904, 1048320, 1106560, 1244880, 1327872, 1422720, 1532160, 1659840, 1991808, 2213120, 2489760, 2845440, 3319680, 3983616, 4979520, 6639360, 9959040, 19918080]

約数ペア:

[(1, 19918080), (2, 9959040), (3, 6639360), (4, 4979520), (5, 3983616), (6, 3319680), (7, 2845440), (8, 2489760), (9, 2213120), (10, 1991808), (12, 1659840), (13, 1532160), (14, 1422720), (15, 1327872), (16, 1244880), (18, 1106560), (19, 1048320), (20, 995904), (21, 948480), (24, 829920), (26, 766080), (28, 711360), (30, 663936), (32, 622440), (35, 569088), (36, 553280), (38, 524160), (39, 510720), (40, 497952), (42, 474240), (45, 442624), (48, 414960), (52, 383040), (56, 355680), (57, 349440), (60, 331968), (63, 316160), (64, 311220), (65, 306432), (70, 284544), (72, 276640), (76, 262080), (78, 255360), (80, 248976), (84, 237120), (90, 221312), (91, 218880), (95, 209664), (96, 207480), (104, 191520), (105, 189696), (112, 177840), (114, 174720), (117, 170240), (120, 165984), (126, 158080), (128, 155610), (130, 153216), (133, 149760), (140, 142272), (144, 138320), (152, 131040), (156, 127680), (160, 124488), (168, 118560), (171, 116480), (180, 110656), (182, 109440), (190, 104832), (192, 103740), (195, 102144), (208, 95760), (210, 94848), (224, 88920), (228, 87360), (234, 85120), (240, 82992), (247, 80640), (252, 79040), (256, 77805), (260, 76608), (266, 74880), (273, 72960), (280, 71136), (285, 69888), (288, 69160), (304, 65520), (312, 63840), (315, 63232), (320, 62244), (336, 59280), (342, 58240), (360, 55328), (364, 54720), (380, 52416), (384, 51870), (390, 51072), (399, 49920), (416, 47880), (420, 47424), (448, 44460), (455, 43776), (456, 43680), (468, 42560), (480, 41496), (494, 40320), (504, 39520), (520, 38304), (532, 37440), (546, 36480), (560, 35568), (570, 34944), (576, 34580), (585, 34048), (608, 32760), (624, 31920), (630, 31616), (640, 31122), (665, 29952), (672, 29640), (684, 29120), (720, 27664), (728, 27360), (741, 26880), (760, 26208), (768, 25935), (780, 25536), (798, 24960), (819, 24320), (832, 23940), (840, 23712), (855, 23296), (896, 22230), (910, 21888), (912, 21840), (936, 21280), (960, 20748), (988, 20160), (1008, 19760), (1040, 19152), (1064, 18720), (1092, 18240), (1120, 17784), (1140, 17472), (1152, 17290), (1170, 17024), (1197, 16640), (1216, 16380), (1235, 16128), (1248, 15960), (1260, 15808), (1280, 15561), (1330, 14976), (1344, 14820), (1365, 14592), (1368, 14560), (1440, 13832), (1456, 13680), (1482, 13440), (1520, 13104), (1560, 12768), (1596, 12480), (1638, 12160), (1664, 11970), (1680, 11856), (1710, 11648), (1729, 11520), (1792, 11115), (1820, 10944), (1824, 10920), (1872, 10640), (1920, 10374), (1976, 10080), (1995, 9984), (2016, 9880), (2080, 9576), (2128, 9360), (2184, 9120), (2223, 8960), (2240, 8892), (2280, 8736), (2304, 8645), (2340, 8512), (2394, 8320), (2432, 8190), (2470, 8064), (2496, 7980), (2520, 7904), (2660, 7488), (2688, 7410), (2730, 7296), (2736, 7280), (2880, 6916), (2912, 6840), (2964, 6720), (3040, 6552), (3120, 6384), (3192, 6240), (3276, 6080), (3328, 5985), (3360, 5928), (3420, 5824), (3458, 5760), (3640, 5472), (3648, 5460), (3705, 5376), (3744, 5320), (3840, 5187), (3952, 5040), (3990, 4992), (4032, 4940), (4095, 4864), (4160, 4788), (4256, 4680), (4368, 4560), (4446, 4480)]