21031549

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3847}}^1$

素因数の和:3936

約数の個数: 16

約数和(自身を含む): 26597376

約数和(自身を除く): 5565827

約数列:

[1, 7, 11, 71, 77, 497, 781, 3847, 5467, 26929, 42317, 273137, 296219, 1911959, 3004507, 21031549]

約数ペア:

[(1, 21031549), (7, 3004507), (11, 1911959), (71, 296219), (77, 273137), (497, 42317), (781, 26929), (3847, 5467)]