19720144081

素因数分解:

${\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2731}}^1\times {\mathrm{5011}}^1$

素因数の和:7884

約数の個数: 16

約数和(自身を含む): 21689369856

約数和(自身を除く): 1969225775

約数列:

[1, 11, 131, 1441, 2731, 5011, 30041, 55121, 357761, 656441, 3935371, 7220851, 13685041, 150535451, 1792740371, 19720144081]

約数ペア:

[(1, 19720144081), (11, 1792740371), (131, 150535451), (1441, 13685041), (2731, 7220851), (5011, 3935371), (30041, 656441), (55121, 357761)]