18911431

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{547}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 23673600

約数和(自身を除く): 4762169

約数列:

[1, 7, 11, 77, 449, 547, 3143, 3829, 4939, 6017, 34573, 42119, 245603, 1719221, 2701633, 18911431]

約数ペア:

[(1, 18911431), (7, 2701633), (11, 1719221), (77, 245603), (449, 42119), (547, 34573), (3143, 6017), (3829, 4939)]