81308259

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{19181}}^1$

素因数の和:19347

約数の個数: 16

約数和(自身を含む): 121230240

約数和(自身を除く): 39921981

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 19181, 57543, 172629, 517887, 3011417, 9034251, 27102753, 81308259]

約数ペア:

[(1, 81308259), (3, 27102753), (9, 9034251), (27, 3011417), (157, 517887), (471, 172629), (1413, 57543), (4239, 19181)]