21707180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98669}}^1$

素因数の和:98689

約数の個数: 24

約数和(自身を含む): 49729680

約数和(自身を除く): 28022500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98669, 197338, 394676, 493345, 986690, 1085359, 1973380, 2170718, 4341436, 5426795, 10853590, 21707180]

約数ペア:

[(1, 21707180), (2, 10853590), (4, 5426795), (5, 4341436), (10, 2170718), (11, 1973380), (20, 1085359), (22, 986690), (44, 493345), (55, 394676), (110, 197338), (220, 98669)]