18697311

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12149}}^1$

素因数の和:12180

約数の個数: 20

約数和(自身を含む): 29403000

約数和(自身を除く): 10705689

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12149, 36447, 109341, 230831, 328023, 692493, 984069, 2077479, 6232437, 18697311]

約数ペア:

[(1, 18697311), (3, 6232437), (9, 2077479), (19, 984069), (27, 692493), (57, 328023), (81, 230831), (171, 109341), (513, 36447), (1539, 12149)]