21118766

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{1787}}^1$

素因数の和:2119

約数の個数: 16

約数和(自身を含む): 33471360

約数和(自身を除く): 12352594

約数列:

[1, 2, 19, 38, 311, 622, 1787, 3574, 5909, 11818, 33953, 67906, 555757, 1111514, 10559383, 21118766]

約数ペア:

[(1, 21118766), (2, 10559383), (19, 1111514), (38, 555757), (311, 67906), (622, 33953), (1787, 11818), (3574, 5909)]