18940397

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8377}}^1$

素因数の和:8420

約数の個数: 16

約数和(自身を含む): 24128640

約数和(自身を除く): 5188243

約数列:

[1, 7, 17, 19, 119, 133, 323, 2261, 8377, 58639, 142409, 159163, 996863, 1114141, 2705771, 18940397]

約数ペア:

[(1, 18940397), (7, 2705771), (17, 1114141), (19, 996863), (119, 159163), (133, 142409), (323, 58639), (2261, 8377)]