20521721

素因数分解:

${\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{5471}}^1$

素因数の和:5524

約数の個数: 12

約数和(自身を含む): 23288832

約数和(自身を除く): 2767111

約数列:

[1, 11, 31, 121, 341, 3751, 5471, 60181, 169601, 661991, 1865611, 20521721]

約数ペア:

[(1, 20521721), (11, 1865611), (31, 661991), (121, 169601), (341, 60181), (3751, 5471)]