21513657

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{5981}}^1$

素因数の和:6104

約数の個数: 16

約数和(自身を含む): 31584960

約数和(自身を除く): 10071303

約数列:

[1, 3, 11, 33, 109, 327, 1199, 3597, 5981, 17943, 65791, 197373, 651929, 1955787, 7171219, 21513657]

約数ペア:

[(1, 21513657), (3, 7171219), (11, 1955787), (33, 651929), (109, 197373), (327, 65791), (1199, 17943), (3597, 5981)]