211231999

素因数分解:

${\mathrm{11}}^2\times {\mathrm{317}}^1\times {\mathrm{5507}}^1$

素因数の和:5846

約数の個数: 12

約数和(自身を含む): 232955352

約数和(自身を除く): 21723353

約数列:

[1, 11, 121, 317, 3487, 5507, 38357, 60577, 666347, 1745719, 19202909, 211231999]

約数ペア:

[(1, 211231999), (11, 19202909), (121, 1745719), (317, 666347), (3487, 60577), (5507, 38357)]