21447283

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 25824960

約数和(自身を除く): 4377677

約数列:

[1, 11, 13, 83, 139, 143, 169, 913, 1079, 1529, 1807, 1859, 11537, 11869, 14027, 19877, 23491, 126907, 149981, 154297, 258401, 1649791, 1949753, 21447283]

約数ペア:

[(1, 21447283), (11, 1949753), (13, 1649791), (83, 258401), (139, 154297), (143, 149981), (169, 126907), (913, 23491), (1079, 19877), (1529, 14027), (1807, 11869), (1859, 11537)]