18991491

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{9491}}^1$

素因数の和:9546

約数の個数: 16

約数和(自身を含む): 27336960

約数和(自身を除く): 8345469

約数列:

[1, 3, 23, 29, 69, 87, 667, 2001, 9491, 28473, 218293, 275239, 654879, 825717, 6330497, 18991491]

約数ペア:

[(1, 18991491), (3, 6330497), (23, 825717), (29, 654879), (69, 275239), (87, 218293), (667, 28473), (2001, 9491)]