21081819

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37579}}^1$

素因数の和:37610

約数の個数: 16

約数和(自身を含む): 32469120

約数和(自身を除く): 11387301

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 37579, 112737, 413369, 638843, 1240107, 1916529, 7027273, 21081819]

約数ペア:

[(1, 21081819), (3, 7027273), (11, 1916529), (17, 1240107), (33, 638843), (51, 413369), (187, 112737), (561, 37579)]