21331569

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23623}}^1$

素因数の和:23676

約数の個数: 16

約数和(自身を含む): 33262592

約数和(自身を除く): 11931023

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23623, 70869, 165361, 496083, 1015789, 3047367, 7110523, 21331569]

約数ペア:

[(1, 21331569), (3, 7110523), (7, 3047367), (21, 1015789), (43, 496083), (129, 165361), (301, 70869), (903, 23623)]