20309211

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{2143}}^1$

素因数の和:2174

約数の個数: 28

約数和(自身を含む): 32807488

約数和(自身を除く): 12498277

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 2143, 3159, 6429, 9477, 19287, 27859, 57861, 83577, 173583, 250731, 520749, 752193, 1562247, 2256579, 6769737, 20309211]

約数ペア:

[(1, 20309211), (3, 6769737), (9, 2256579), (13, 1562247), (27, 752193), (39, 520749), (81, 250731), (117, 173583), (243, 83577), (351, 57861), (729, 27859), (1053, 19287), (2143, 9477), (3159, 6429)]