21091213

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1777}}^1$

素因数の和:1884

約数の個数: 16

約数和(自身を含む): 25091136

約数和(自身を除く): 3999923

約数列:

[1, 11, 13, 83, 143, 913, 1079, 1777, 11869, 19547, 23101, 147491, 254111, 1622401, 1917383, 21091213]

約数ペア:

[(1, 21091213), (11, 1917383), (13, 1622401), (83, 254111), (143, 147491), (913, 23101), (1079, 19547), (1777, 11869)]