12991891

素因数分解:

${\mathrm{11}}^3\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:303

約数の個数: 16

約数和(自身を含む): 14686848

約数和(自身を除く): 1694957

約数列:

[1, 11, 43, 121, 227, 473, 1331, 2497, 5203, 9761, 27467, 57233, 107371, 302137, 1181081, 12991891]

約数ペア:

[(1, 12991891), (11, 1181081), (43, 302137), (121, 107371), (227, 57233), (473, 27467), (1331, 9761), (2497, 5203)]