21515814

素因数分解:

$2^1\times 3^3\times {\mathrm{398441}}^1$

素因数の和:398452

約数の個数: 16

約数和(自身を含む): 47813040

約数和(自身を除く): 26297226

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 398441, 796882, 1195323, 2390646, 3585969, 7171938, 10757907, 21515814]

約数ペア:

[(1, 21515814), (2, 10757907), (3, 7171938), (6, 3585969), (9, 2390646), (18, 1195323), (27, 796882), (54, 398441)]