21481578

素因数分解:

$2^1\times 3^3\times {\mathrm{397807}}^1$

素因数の和:397818

約数の個数: 16

約数和(自身を含む): 47736960

約数和(自身を除く): 26255382

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 397807, 795614, 1193421, 2386842, 3580263, 7160526, 10740789, 21481578]

約数ペア:

[(1, 21481578), (2, 10740789), (3, 7160526), (6, 3580263), (9, 2386842), (18, 1193421), (27, 795614), (54, 397807)]