21051844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{478451}}^1$

素因数の和:478466

約数の個数: 12

約数和(自身を含む): 40189968

約数和(自身を除く): 19138124

約数列:

[1, 2, 4, 11, 22, 44, 478451, 956902, 1913804, 5262961, 10525922, 21051844]

約数ペア:

[(1, 21051844), (2, 10525922), (4, 5262961), (11, 1913804), (22, 956902), (44, 478451)]