21015885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11579}}^1$

素因数の和:11609

約数の個数: 24

約数和(自身を含む): 36963360

約数和(自身を除く): 15947475

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11579, 34737, 57895, 127369, 173685, 382107, 636845, 1401059, 1910535, 4203177, 7005295, 21015885]

約数ペア:

[(1, 21015885), (3, 7005295), (5, 4203177), (11, 1910535), (15, 1401059), (33, 636845), (55, 382107), (121, 173685), (165, 127369), (363, 57895), (605, 34737), (1815, 11579)]