8720271

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:125

約数の個数: 64

約数和(自身を含む): 16051200

約数和(自身を除く): 7330929

約数列:

[1, 3, 7, 9, 21, 27, 29, 37, 43, 63, 87, 111, 129, 189, 203, 259, 261, 301, 333, 387, 609, 777, 783, 903, 999, 1073, 1161, 1247, 1591, 1827, 2331, 2709, 3219, 3741, 4773, 5481, 6993, 7511, 8127, 8729, 9657, 11137, 11223, 14319, 22533, 26187, 28971, 33411, 33669, 42957, 46139, 67599, 78561, 100233, 138417, 202797, 235683, 300699, 322973, 415251, 968919, 1245753, 2906757, 8720271]

約数ペア:

[(1, 8720271), (3, 2906757), (7, 1245753), (9, 968919), (21, 415251), (27, 322973), (29, 300699), (37, 235683), (43, 202797), (63, 138417), (87, 100233), (111, 78561), (129, 67599), (189, 46139), (203, 42957), (259, 33669), (261, 33411), (301, 28971), (333, 26187), (387, 22533), (609, 14319), (777, 11223), (783, 11137), (903, 9657), (999, 8729), (1073, 8127), (1161, 7511), (1247, 6993), (1591, 5481), (1827, 4773), (2331, 3741), (2709, 3219)]