21000739239

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{396637}}^1$

素因数の和:396736

約数の個数: 32

約数和(自身を含む): 32556047040

約数和(自身を除く): 11555307801

約数列:

[1, 3, 9, 27, 37, 53, 111, 159, 333, 477, 999, 1431, 1961, 5883, 17649, 52947, 396637, 1189911, 3569733, 10709199, 14675569, 21021761, 44026707, 63065283, 132080121, 189195849, 396240363, 567587547, 777805157, 2333415471, 7000246413, 21000739239]

約数ペア:

[(1, 21000739239), (3, 7000246413), (9, 2333415471), (27, 777805157), (37, 567587547), (53, 396240363), (111, 189195849), (159, 132080121), (333, 63065283), (477, 44026707), (999, 21021761), (1431, 14675569), (1961, 10709199), (5883, 3569733), (17649, 1189911), (52947, 396637)]