21287860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96763}}^1$

素因数の和:96783

約数の個数: 24

約数和(自身を含む): 48769056

約数和(自身を除く): 27481196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96763, 193526, 387052, 483815, 967630, 1064393, 1935260, 2128786, 4257572, 5321965, 10643930, 21287860]

約数ペア:

[(1, 21287860), (2, 10643930), (4, 5321965), (5, 4257572), (10, 2128786), (11, 1935260), (20, 1064393), (22, 967630), (44, 483815), (55, 387052), (110, 193526), (220, 96763)]