18517947

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{51871}}^1$

素因数の和:51898

約数の個数: 16

約数和(自身を含む): 29878272

約数和(自身を除く): 11360325

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 51871, 155613, 363097, 881807, 1089291, 2645421, 6172649, 18517947]

約数ペア:

[(1, 18517947), (3, 6172649), (7, 2645421), (17, 1089291), (21, 881807), (51, 363097), (119, 155613), (357, 51871)]