18847180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85669}}^1$

素因数の和:85689

約数の個数: 24

約数和(自身を含む): 43177680

約数和(自身を除く): 24330500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85669, 171338, 342676, 428345, 856690, 942359, 1713380, 1884718, 3769436, 4711795, 9423590, 18847180]

約数ペア:

[(1, 18847180), (2, 9423590), (4, 4711795), (5, 3769436), (10, 1884718), (11, 1713380), (20, 942359), (22, 856690), (44, 428345), (55, 342676), (110, 171338), (220, 85669)]