21089727

素因数分解:

$3^5\times {\mathrm{59}}^1\times {\mathrm{1471}}^1$

素因数の和:1545

約数の個数: 24

約数和(自身を含む): 32148480

約数和(自身を除く): 11058753

約数列:

[1, 3, 9, 27, 59, 81, 177, 243, 531, 1471, 1593, 4413, 4779, 13239, 14337, 39717, 86789, 119151, 260367, 357453, 781101, 2343303, 7029909, 21089727]

約数ペア:

[(1, 21089727), (3, 7029909), (9, 2343303), (27, 781101), (59, 357453), (81, 260367), (177, 119151), (243, 86789), (531, 39717), (1471, 14337), (1593, 13239), (4413, 4779)]