18866981

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3299}}^1$

素因数の和:3368

約数の個数: 16

約数和(自身を含む): 23232000

約数和(自身を除く): 4365019

約数列:

[1, 7, 19, 43, 133, 301, 817, 3299, 5719, 23093, 62681, 141857, 438767, 992999, 2695283, 18866981]

約数ペア:

[(1, 18866981), (7, 2695283), (19, 992999), (43, 438767), (133, 141857), (301, 62681), (817, 23093), (3299, 5719)]