21729120

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:277

約数の個数: 192

約数和(自身を含む): 81285120

約数和(自身を除く): 59556000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 32, 35, 40, 42, 48, 56, 58, 60, 70, 80, 84, 87, 96, 105, 112, 116, 120, 140, 145, 160, 168, 174, 203, 210, 223, 224, 232, 240, 280, 290, 336, 348, 406, 420, 435, 446, 464, 480, 560, 580, 609, 669, 672, 696, 812, 840, 870, 892, 928, 1015, 1115, 1120, 1160, 1218, 1338, 1392, 1561, 1624, 1680, 1740, 1784, 2030, 2230, 2320, 2436, 2676, 2784, 3045, 3122, 3248, 3345, 3360, 3480, 3568, 4060, 4460, 4640, 4683, 4872, 5352, 6090, 6244, 6467, 6496, 6690, 6960, 7136, 7805, 8120, 8920, 9366, 9744, 10704, 12180, 12488, 12934, 13380, 13920, 15610, 16240, 17840, 18732, 19401, 19488, 21408, 23415, 24360, 24976, 25868, 26760, 31220, 32335, 32480, 35680, 37464, 38802, 45269, 46830, 48720, 49952, 51736, 53520, 62440, 64670, 74928, 77604, 90538, 93660, 97005, 97440, 103472, 107040, 124880, 129340, 135807, 149856, 155208, 181076, 187320, 194010, 206944, 226345, 249760, 258680, 271614, 310416, 362152, 374640, 388020, 452690, 517360, 543228, 620832, 679035, 724304, 749280, 776040, 905380, 1034720, 1086456, 1358070, 1448608, 1552080, 1810760, 2172912, 2716140, 3104160, 3621520, 4345824, 5432280, 7243040, 10864560, 21729120]

約数ペア:

[(1, 21729120), (2, 10864560), (3, 7243040), (4, 5432280), (5, 4345824), (6, 3621520), (7, 3104160), (8, 2716140), (10, 2172912), (12, 1810760), (14, 1552080), (15, 1448608), (16, 1358070), (20, 1086456), (21, 1034720), (24, 905380), (28, 776040), (29, 749280), (30, 724304), (32, 679035), (35, 620832), (40, 543228), (42, 517360), (48, 452690), (56, 388020), (58, 374640), (60, 362152), (70, 310416), (80, 271614), (84, 258680), (87, 249760), (96, 226345), (105, 206944), (112, 194010), (116, 187320), (120, 181076), (140, 155208), (145, 149856), (160, 135807), (168, 129340), (174, 124880), (203, 107040), (210, 103472), (223, 97440), (224, 97005), (232, 93660), (240, 90538), (280, 77604), (290, 74928), (336, 64670), (348, 62440), (406, 53520), (420, 51736), (435, 49952), (446, 48720), (464, 46830), (480, 45269), (560, 38802), (580, 37464), (609, 35680), (669, 32480), (672, 32335), (696, 31220), (812, 26760), (840, 25868), (870, 24976), (892, 24360), (928, 23415), (1015, 21408), (1115, 19488), (1120, 19401), (1160, 18732), (1218, 17840), (1338, 16240), (1392, 15610), (1561, 13920), (1624, 13380), (1680, 12934), (1740, 12488), (1784, 12180), (2030, 10704), (2230, 9744), (2320, 9366), (2436, 8920), (2676, 8120), (2784, 7805), (3045, 7136), (3122, 6960), (3248, 6690), (3345, 6496), (3360, 6467), (3480, 6244), (3568, 6090), (4060, 5352), (4460, 4872), (4640, 4683)]