81305840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:295

約数の個数: 160

約数和(自身を含む): 240413184

約数和(自身を除く): 159107344

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 67, 70, 77, 80, 88, 110, 112, 134, 140, 154, 176, 197, 220, 268, 280, 308, 335, 385, 394, 440, 469, 536, 560, 616, 670, 737, 770, 788, 880, 938, 985, 1072, 1232, 1340, 1379, 1474, 1540, 1576, 1876, 1970, 2167, 2345, 2680, 2758, 2948, 3080, 3152, 3685, 3752, 3940, 4334, 4690, 5159, 5360, 5516, 5896, 6160, 6895, 7370, 7504, 7880, 8668, 9380, 10318, 10835, 11032, 11792, 13199, 13790, 14740, 15169, 15760, 17336, 18760, 20636, 21670, 22064, 25795, 26398, 27580, 29480, 30338, 34672, 37520, 41272, 43340, 51590, 52796, 55160, 58960, 60676, 65995, 75845, 82544, 86680, 92393, 103180, 105592, 110320, 121352, 131990, 145189, 151690, 173360, 184786, 206360, 211184, 242704, 263980, 290378, 303380, 369572, 412720, 461965, 527960, 580756, 606760, 725945, 739144, 923930, 1016323, 1055920, 1161512, 1213520, 1451890, 1478288, 1847860, 2032646, 2323024, 2903780, 3695720, 4065292, 5081615, 5807560, 7391440, 8130584, 10163230, 11615120, 16261168, 20326460, 40652920, 81305840]

約数ペア:

[(1, 81305840), (2, 40652920), (4, 20326460), (5, 16261168), (7, 11615120), (8, 10163230), (10, 8130584), (11, 7391440), (14, 5807560), (16, 5081615), (20, 4065292), (22, 3695720), (28, 2903780), (35, 2323024), (40, 2032646), (44, 1847860), (55, 1478288), (56, 1451890), (67, 1213520), (70, 1161512), (77, 1055920), (80, 1016323), (88, 923930), (110, 739144), (112, 725945), (134, 606760), (140, 580756), (154, 527960), (176, 461965), (197, 412720), (220, 369572), (268, 303380), (280, 290378), (308, 263980), (335, 242704), (385, 211184), (394, 206360), (440, 184786), (469, 173360), (536, 151690), (560, 145189), (616, 131990), (670, 121352), (737, 110320), (770, 105592), (788, 103180), (880, 92393), (938, 86680), (985, 82544), (1072, 75845), (1232, 65995), (1340, 60676), (1379, 58960), (1474, 55160), (1540, 52796), (1576, 51590), (1876, 43340), (1970, 41272), (2167, 37520), (2345, 34672), (2680, 30338), (2758, 29480), (2948, 27580), (3080, 26398), (3152, 25795), (3685, 22064), (3752, 21670), (3940, 20636), (4334, 18760), (4690, 17336), (5159, 15760), (5360, 15169), (5516, 14740), (5896, 13790), (6160, 13199), (6895, 11792), (7370, 11032), (7504, 10835), (7880, 10318), (8668, 9380)]