20557459

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 23067520

約数和(自身を除く): 2510061

約数列:

[1, 13, 37, 79, 481, 541, 1027, 2923, 7033, 20017, 37999, 42739, 260221, 555607, 1581343, 20557459]

約数ペア:

[(1, 20557459), (13, 1581343), (37, 555607), (79, 260221), (481, 42739), (541, 37999), (1027, 20017), (2923, 7033)]