19489954

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{80537}}^1$

素因数の和:80561

約数の個数: 12

約数和(自身を含む): 32134662

約数和(自身を除く): 12644708

約数列:

[1, 2, 11, 22, 121, 242, 80537, 161074, 885907, 1771814, 9744977, 19489954]

約数ペア:

[(1, 19489954), (2, 9744977), (11, 1771814), (22, 885907), (121, 161074), (242, 80537)]