21812769

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2789}}^1$

素因数の和:2885

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 13006431

約数列:

[1, 3, 9, 11, 33, 79, 99, 237, 711, 869, 2607, 2789, 7821, 8367, 25101, 30679, 92037, 220331, 276111, 660993, 1982979, 2423641, 7270923, 21812769]

約数ペア:

[(1, 21812769), (3, 7270923), (9, 2423641), (11, 1982979), (33, 660993), (79, 276111), (99, 220331), (237, 92037), (711, 30679), (869, 25101), (2607, 8367), (2789, 7821)]