21964820

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1549}}^1$

素因数の和:2267

約数の個数: 24

約数和(自身を含む): 46221000

約数和(自身を除く): 24256180

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1549, 2836, 3098, 3545, 6196, 7090, 7745, 14180, 15490, 30980, 1098241, 2196482, 4392964, 5491205, 10982410, 21964820]

約数ペア:

[(1, 21964820), (2, 10982410), (4, 5491205), (5, 4392964), (10, 2196482), (20, 1098241), (709, 30980), (1418, 15490), (1549, 14180), (2836, 7745), (3098, 7090), (3545, 6196)]