21329891

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:994

約数の個数: 16

約数和(自身を含む): 24385536

約数和(自身を除く): 3055645

約数列:

[1, 11, 31, 71, 341, 781, 881, 2201, 9691, 24211, 27311, 62551, 300421, 688061, 1939081, 21329891]

約数ペア:

[(1, 21329891), (11, 1939081), (31, 688061), (71, 300421), (341, 62551), (781, 27311), (881, 24211), (2201, 9691)]