51380721

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{28123}}^1$

素因数の和:28165

約数の個数: 24

約数和(自身を含む): 87746880

約数和(自身を除く): 36366159

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 28123, 84369, 196861, 253107, 590583, 815567, 1771749, 2446701, 5708969, 7340103, 17126907, 51380721]

約数ペア:

[(1, 51380721), (3, 17126907), (7, 7340103), (9, 5708969), (21, 2446701), (29, 1771749), (63, 815567), (87, 590583), (203, 253107), (261, 196861), (609, 84369), (1827, 28123)]