20890845

素因数分解:

$3^3\times 5^1\times {\mathrm{154747}}^1$

素因数の和:154761

約数の個数: 16

約数和(自身を含む): 37139520

約数和(自身を除く): 16248675

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154747, 464241, 773735, 1392723, 2321205, 4178169, 6963615, 20890845]

約数ペア:

[(1, 20890845), (3, 6963615), (5, 4178169), (9, 2321205), (15, 1392723), (27, 773735), (45, 464241), (135, 154747)]