20728303232

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:691

約数の個数: 256

約数和(自身を含む): 53864160000

約数和(自身を除く): 33135856768

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 52, 56, 64, 76, 91, 104, 112, 128, 133, 152, 182, 208, 224, 229, 247, 266, 304, 364, 409, 416, 448, 458, 494, 532, 608, 728, 818, 832, 896, 916, 988, 1064, 1216, 1456, 1603, 1636, 1664, 1729, 1832, 1976, 2128, 2432, 2863, 2912, 2977, 3206, 3272, 3458, 3664, 3952, 4256, 4351, 5317, 5726, 5824, 5954, 6412, 6544, 6916, 7328, 7771, 7904, 8512, 8702, 10634, 11452, 11648, 11908, 12824, 13088, 13832, 14656, 15542, 15808, 17024, 17404, 20839, 21268, 22904, 23816, 25648, 26176, 27664, 29312, 30457, 31084, 31616, 34808, 37219, 41678, 42536, 45808, 47632, 51296, 52352, 54397, 55328, 56563, 60914, 62168, 69616, 74438, 83356, 85072, 91616, 93661, 95264, 101023, 102592, 108794, 110656, 113126, 121828, 124336, 139232, 148876, 166712, 170144, 183232, 187322, 190528, 202046, 205184, 217588, 221312, 226252, 243656, 248672, 278464, 297752, 333424, 340288, 366464, 374644, 381056, 395941, 404092, 435176, 452504, 487312, 497344, 556928, 595504, 655627, 666848, 680576, 707161, 749288, 791882, 808184, 870352, 905008, 974624, 994688, 1191008, 1217593, 1311254, 1333696, 1414322, 1498576, 1583764, 1616368, 1740704, 1779559, 1810016, 1949248, 2382016, 2435186, 2622508, 2667392, 2828644, 2997152, 3167528, 3232736, 3481408, 3559118, 3620032, 3898496, 4764032, 4870372, 5245016, 5657288, 5994304, 6335056, 6465472, 6962816, 7118236, 7240064, 8523151, 9740744, 10490032, 11314576, 11988608, 12456913, 12670112, 12930944, 14236472, 17046302, 19481488, 20980064, 22629152, 23134267, 24913826, 25340224, 28472944, 34092604, 38962976, 41960128, 45258304, 46268534, 49827652, 50680448, 56945888, 68185208, 77925952, 83920256, 90516608, 92537068, 99655304, 113891776, 136370416, 155851904, 161939869, 185074136, 199310608, 227783552, 272740832, 323879738, 370148272, 398621216, 545481664, 647759476, 740296544, 797242432, 1090963328, 1295518952, 1480593088, 1594484864, 2591037904, 2961186176, 5182075808, 10364151616, 20728303232]

約数ペア:

[(1, 20728303232), (2, 10364151616), (4, 5182075808), (7, 2961186176), (8, 2591037904), (13, 1594484864), (14, 1480593088), (16, 1295518952), (19, 1090963328), (26, 797242432), (28, 740296544), (32, 647759476), (38, 545481664), (52, 398621216), (56, 370148272), (64, 323879738), (76, 272740832), (91, 227783552), (104, 199310608), (112, 185074136), (128, 161939869), (133, 155851904), (152, 136370416), (182, 113891776), (208, 99655304), (224, 92537068), (229, 90516608), (247, 83920256), (266, 77925952), (304, 68185208), (364, 56945888), (409, 50680448), (416, 49827652), (448, 46268534), (458, 45258304), (494, 41960128), (532, 38962976), (608, 34092604), (728, 28472944), (818, 25340224), (832, 24913826), (896, 23134267), (916, 22629152), (988, 20980064), (1064, 19481488), (1216, 17046302), (1456, 14236472), (1603, 12930944), (1636, 12670112), (1664, 12456913), (1729, 11988608), (1832, 11314576), (1976, 10490032), (2128, 9740744), (2432, 8523151), (2863, 7240064), (2912, 7118236), (2977, 6962816), (3206, 6465472), (3272, 6335056), (3458, 5994304), (3664, 5657288), (3952, 5245016), (4256, 4870372), (4351, 4764032), (5317, 3898496), (5726, 3620032), (5824, 3559118), (5954, 3481408), (6412, 3232736), (6544, 3167528), (6916, 2997152), (7328, 2828644), (7771, 2667392), (7904, 2622508), (8512, 2435186), (8702, 2382016), (10634, 1949248), (11452, 1810016), (11648, 1779559), (11908, 1740704), (12824, 1616368), (13088, 1583764), (13832, 1498576), (14656, 1414322), (15542, 1333696), (15808, 1311254), (17024, 1217593), (17404, 1191008), (20839, 994688), (21268, 974624), (22904, 905008), (23816, 870352), (25648, 808184), (26176, 791882), (27664, 749288), (29312, 707161), (30457, 680576), (31084, 666848), (31616, 655627), (34808, 595504), (37219, 556928), (41678, 497344), (42536, 487312), (45808, 452504), (47632, 435176), (51296, 404092), (52352, 395941), (54397, 381056), (55328, 374644), (56563, 366464), (60914, 340288), (62168, 333424), (69616, 297752), (74438, 278464), (83356, 248672), (85072, 243656), (91616, 226252), (93661, 221312), (95264, 217588), (101023, 205184), (102592, 202046), (108794, 190528), (110656, 187322), (113126, 183232), (121828, 170144), (124336, 166712), (139232, 148876)]