21491899

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{1051}}^1$

素因数の和:1099

約数の個数: 18

約数和(自身を含む): 25604628

約数和(自身を除く): 4112729

約数列:

[1, 11, 13, 121, 143, 169, 1051, 1573, 1859, 11561, 13663, 20449, 127171, 150293, 177619, 1653223, 1953809, 21491899]

約数ペア:

[(1, 21491899), (11, 1953809), (13, 1653223), (121, 177619), (143, 150293), (169, 127171), (1051, 20449), (1573, 13663), (1859, 11561)]