20691261

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{739}}^1$

素因数の和:826

約数の個数: 32

約数和(自身を含む): 33033600

約数和(自身を除く): 12342339

約数列:

[1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 739, 1037, 1647, 2217, 3111, 6651, 9333, 12563, 19953, 27999, 37689, 45079, 113067, 135237, 339201, 405711, 766343, 1217133, 2299029, 6897087, 20691261]

約数ペア:

[(1, 20691261), (3, 6897087), (9, 2299029), (17, 1217133), (27, 766343), (51, 405711), (61, 339201), (153, 135237), (183, 113067), (459, 45079), (549, 37689), (739, 27999), (1037, 19953), (1647, 12563), (2217, 9333), (3111, 6651)]