20988539

素因数分解:

${\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1259

約数の個数: 16

約数和(自身を含む): 24882144

約数和(自身を除く): 3893605

約数列:

[1, 11, 13, 121, 143, 1213, 1331, 1573, 13343, 15769, 17303, 146773, 173459, 1614503, 1908049, 20988539]

約数ペア:

[(1, 20988539), (11, 1908049), (13, 1614503), (121, 173459), (143, 146773), (1213, 17303), (1331, 15769), (1573, 13343)]