21904905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132757}}^1$

素因数の和:132776

約数の個数: 16

約数和(自身を含む): 38234304

約数和(自身を除く): 16329399

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132757, 398271, 663785, 1460327, 1991355, 4380981, 7301635, 21904905]

約数ペア:

[(1, 21904905), (3, 7301635), (5, 4380981), (11, 1991355), (15, 1460327), (33, 663785), (55, 398271), (165, 132757)]