12720183

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20887}}^1$

素因数の和:20926

約数の個数: 16

約数和(自身を含む): 20052480

約数和(自身を除く): 7332297

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 20887, 62661, 146209, 438627, 605723, 1817169, 4240061, 12720183]

約数ペア:

[(1, 12720183), (3, 4240061), (7, 1817169), (21, 605723), (29, 438627), (87, 146209), (203, 62661), (609, 20887)]