18256581

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1471}}^1$

素因数の和:1681

約数の個数: 24

約数和(自身を含む): 30311424

約数和(自身を除く): 12054843

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1471, 1773, 4137, 4413, 10297, 12411, 13239, 30891, 92673, 289787, 869361, 2028509, 2608083, 6085527, 18256581]

約数ペア:

[(1, 18256581), (3, 6085527), (7, 2608083), (9, 2028509), (21, 869361), (63, 289787), (197, 92673), (591, 30891), (1379, 13239), (1471, 12411), (1773, 10297), (4137, 4413)]