18120389

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{3881}}^1$

素因数の和:3940

約数の個数: 16

約数和(自身を含む): 22360320

約数和(自身を除く): 4239931

約数列:

[1, 7, 23, 29, 161, 203, 667, 3881, 4669, 27167, 89263, 112549, 624841, 787843, 2588627, 18120389]

約数ペア:

[(1, 18120389), (7, 2588627), (23, 787843), (29, 624841), (161, 112549), (203, 89263), (667, 27167), (3881, 4669)]