20565584180

素因数分解:

$2^2\times 5^1\times {\mathrm{919}}^1\times {\mathrm{1118911}}^1$

素因数の和:1119839

約数の個数: 24

約数和(自身を含む): 43234759680

約数和(自身を除く): 22669175500

約数列:

[1, 2, 4, 5, 10, 20, 919, 1838, 3676, 4595, 9190, 18380, 1118911, 2237822, 4475644, 5594555, 11189110, 22378220, 1028279209, 2056558418, 4113116836, 5141396045, 10282792090, 20565584180]

約数ペア:

[(1, 20565584180), (2, 10282792090), (4, 5141396045), (5, 4113116836), (10, 2056558418), (20, 1028279209), (919, 22378220), (1838, 11189110), (3676, 5594555), (4595, 4475644), (9190, 2237822), (18380, 1118911)]