20019571

素因数分解:

${\mathrm{11}}^3\times {\mathrm{13}}^2\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 24

約数和(自身を含む): 24112080

約数和(自身を除く): 4092509

約数列:

[1, 11, 13, 89, 121, 143, 169, 979, 1157, 1331, 1573, 1859, 10769, 12727, 15041, 17303, 20449, 118459, 139997, 165451, 224939, 1539967, 1819961, 20019571]

約数ペア:

[(1, 20019571), (11, 1819961), (13, 1539967), (89, 224939), (121, 165451), (143, 139997), (169, 118459), (979, 20449), (1157, 17303), (1331, 15041), (1573, 12727), (1859, 10769)]