21090916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68477}}^1$

素因数の和:68499

約数の個数: 24

約数和(自身を含む): 46017216

約数和(自身を除く): 24926300

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68477, 136954, 273908, 479339, 753247, 958678, 1506494, 1917356, 3012988, 5272729, 10545458, 21090916]

約数ペア:

[(1, 21090916), (2, 10545458), (4, 5272729), (7, 3012988), (11, 1917356), (14, 1506494), (22, 958678), (28, 753247), (44, 479339), (77, 273908), (154, 136954), (308, 68477)]