20411111

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{83}}^1$

素因数の和:195

約数の個数: 24

約数和(自身を含む): 25441920

約数和(自身を除く): 5030809

約数列:

[1, 7, 19, 43, 83, 133, 301, 581, 817, 1577, 1849, 3569, 5719, 11039, 12943, 24983, 35131, 67811, 153467, 245917, 474677, 1074269, 2915873, 20411111]

約数ペア:

[(1, 20411111), (7, 2915873), (19, 1074269), (43, 474677), (83, 245917), (133, 153467), (301, 67811), (581, 35131), (817, 24983), (1577, 12943), (1849, 11039), (3569, 5719)]