21189311

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2087}}^1$

素因数の和:2182

約数の個数: 16

約数和(自身を含む): 25256448

約数和(自身を除く): 4067137

約数列:

[1, 11, 13, 71, 143, 781, 923, 2087, 10153, 22957, 27131, 148177, 298441, 1629947, 1926301, 21189311]

約数ペア:

[(1, 21189311), (11, 1926301), (13, 1629947), (71, 298441), (143, 148177), (781, 27131), (923, 22957), (2087, 10153)]