18779719

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:430

約数の個数: 16

約数和(自身を含む): 21936640

約数和(自身を除く): 3156921

約数列:

[1, 7, 109, 151, 163, 763, 1057, 1141, 16459, 17767, 24613, 115213, 124369, 172291, 2682817, 18779719]

約数ペア:

[(1, 18779719), (7, 2682817), (109, 172291), (151, 124369), (163, 115213), (763, 24613), (1057, 17767), (1141, 16459)]