81440721

素因数分解:

$3^5\times {\mathrm{461}}^1\times {\mathrm{727}}^1$

素因数の和:1203

約数の個数: 24

約数和(自身を含む): 122426304

約数和(自身を除く): 40985583

約数列:

[1, 3, 9, 27, 81, 243, 461, 727, 1383, 2181, 4149, 6543, 12447, 19629, 37341, 58887, 112023, 176661, 335147, 1005441, 3016323, 9048969, 27146907, 81440721]

約数ペア:

[(1, 81440721), (3, 27146907), (9, 9048969), (27, 3016323), (81, 1005441), (243, 335147), (461, 176661), (727, 112023), (1383, 58887), (2181, 37341), (4149, 19629), (6543, 12447)]