21805161

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17599}}^1$

素因数の和:17668

約数の個数: 16

約数和(自身を含む): 33792000

約数和(自身を除く): 11986839

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17599, 52797, 123193, 369579, 1038341, 3115023, 7268387, 21805161]

約数ペア:

[(1, 21805161), (3, 7268387), (7, 3115023), (21, 1038341), (59, 369579), (177, 123193), (413, 52797), (1239, 17599)]