18888639

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81769}}^1$

素因数の和:81790

約数の個数: 16

約数和(自身を含む): 31399680

約数和(自身を除く): 12511041

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81769, 245307, 572383, 899459, 1717149, 2698377, 6296213, 18888639]

約数ペア:

[(1, 18888639), (3, 6296213), (7, 2698377), (11, 1717149), (21, 899459), (33, 572383), (77, 245307), (231, 81769)]