21613311

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1637}}^1$

素因数の和:1812

約数の個数: 20

約数和(自身を含む): 32504472

約数和(自身を除く): 10891161

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 1637, 4401, 4911, 13203, 14733, 44199, 132597, 266831, 800493, 2401479, 7204437, 21613311]

約数ペア:

[(1, 21613311), (3, 7204437), (9, 2401479), (27, 800493), (81, 266831), (163, 132597), (489, 44199), (1467, 14733), (1637, 13203), (4401, 4911)]