19712121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{45949}}^1$

素因数の和:45976

約数の個数: 16

約数和(自身を含む): 30878400

約数和(自身を除く): 11166279

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 45949, 137847, 505439, 597337, 1516317, 1792011, 6570707, 19712121]

約数ペア:

[(1, 19712121), (3, 6570707), (11, 1792011), (13, 1516317), (33, 597337), (39, 505439), (143, 137847), (429, 45949)]