30991261

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5419}}^1$

素因数の和:5488

約数の個数: 16

約数和(自身を含む): 38156800

約数和(自身を除く): 7165539

約数列:

[1, 7, 19, 43, 133, 301, 817, 5419, 5719, 37933, 102961, 233017, 720727, 1631119, 4427323, 30991261]

約数ペア:

[(1, 30991261), (7, 4427323), (19, 1631119), (43, 720727), (133, 233017), (301, 102961), (817, 37933), (5419, 5719)]