18319161

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20287}}^1$

素因数の和:20340

約数の個数: 16

約数和(自身を含む): 28565504

約数和(自身を除く): 10246343

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20287, 60861, 142009, 426027, 872341, 2617023, 6106387, 18319161]

約数ペア:

[(1, 18319161), (3, 6106387), (7, 2617023), (21, 872341), (43, 426027), (129, 142009), (301, 60861), (903, 20287)]