21227740

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5557}}^1$

素因数の和:5757

約数の個数: 24

約数和(自身を含む): 44819712

約数和(自身を除く): 23591972

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5557, 11114, 22228, 27785, 55570, 111140, 1061387, 2122774, 4245548, 5306935, 10613870, 21227740]

約数ペア:

[(1, 21227740), (2, 10613870), (4, 5306935), (5, 4245548), (10, 2122774), (20, 1061387), (191, 111140), (382, 55570), (764, 27785), (955, 22228), (1910, 11114), (3820, 5557)]