20662209

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{4813}}^1$

素因数の和:4878

約数の個数: 20

約数和(自身を含む): 31454676

約数和(自身を除く): 10792467

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4293, 4813, 14439, 43317, 129951, 255089, 389853, 765267, 2295801, 6887403, 20662209]

約数ペア:

[(1, 20662209), (3, 6887403), (9, 2295801), (27, 765267), (53, 389853), (81, 255089), (159, 129951), (477, 43317), (1431, 14439), (4293, 4813)]