21242847

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{907}}^1$

素因数の和:1158

約数の個数: 16

約数和(自身を含む): 29259392

約数和(自身を除く): 8016545

約数列:

[1, 3, 37, 111, 211, 633, 907, 2721, 7807, 23421, 33559, 100677, 191377, 574131, 7080949, 21242847]

約数ペア:

[(1, 21242847), (3, 7080949), (37, 574131), (111, 191377), (211, 100677), (633, 33559), (907, 23421), (2721, 7807)]