208397781

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{5179}}^1$

素因数の和:5465

約数の個数: 24

約数和(自身を含む): 319999680

約数和(自身を除く): 111601899

約数列:

[1, 3, 9, 17, 51, 153, 263, 789, 2367, 4471, 5179, 13413, 15537, 40239, 46611, 88043, 264129, 792387, 1362077, 4086231, 12258693, 23155309, 69465927, 208397781]

約数ペア:

[(1, 208397781), (3, 69465927), (9, 23155309), (17, 12258693), (51, 4086231), (153, 1362077), (263, 792387), (789, 264129), (2367, 88043), (4471, 46611), (5179, 40239), (13413, 15537)]