28931221

素因数分解:

${\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{1321}}^1$

素因数の和:1524

約数の個数: 12

約数和(自身を含む): 32000332

約数和(自身を除く): 3069111

約数列:

[1, 11, 121, 181, 1321, 1991, 14531, 21901, 159841, 239101, 2630111, 28931221]

約数ペア:

[(1, 28931221), (11, 2630111), (121, 239101), (181, 159841), (1321, 21901), (1991, 14531)]