205780257

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{149441}}^1$

素因数の和:149470

約数の個数: 20

約数和(自身を含む): 325484676

約数和(自身を除く): 119704419

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 149441, 448323, 1344969, 2540497, 4034907, 7621491, 12104721, 22864473, 68593419, 205780257]

約数ペア:

[(1, 205780257), (3, 68593419), (9, 22864473), (17, 12104721), (27, 7621491), (51, 4034907), (81, 2540497), (153, 1344969), (459, 448323), (1377, 149441)]