21726289

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2657}}^1$

素因数の和:2724

約数の個数: 16

約数和(自身を含む): 25453008

約数和(自身を除く): 3726719

約数列:

[1, 13, 17, 37, 221, 481, 629, 2657, 8177, 34541, 45169, 98309, 587197, 1278017, 1671253, 21726289]

約数ペア:

[(1, 21726289), (13, 1671253), (17, 1278017), (37, 587197), (221, 98309), (481, 45169), (629, 34541), (2657, 8177)]