215391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:182

約数の個数: 16

約数和(自身を含む): 321408

約数和(自身を除く): 106017

約数列:

[1, 3, 11, 33, 61, 107, 183, 321, 671, 1177, 2013, 3531, 6527, 19581, 71797, 215391]

約数ペア:

[(1, 215391), (3, 71797), (11, 19581), (33, 6527), (61, 3531), (107, 2013), (183, 1177), (321, 671)]