21228111

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2887}}^1$

素因数の和:2955

約数の個数: 24

約数和(自身を含む): 33038720

約数和(自身を除く): 11810609

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2887, 7353, 8661, 25983, 54853, 124141, 164559, 372423, 493677, 1117269, 2358679, 7076037, 21228111]

約数ペア:

[(1, 21228111), (3, 7076037), (9, 2358679), (19, 1117269), (43, 493677), (57, 372423), (129, 164559), (171, 124141), (387, 54853), (817, 25983), (2451, 8661), (2887, 7353)]