18721180

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2113}}^1$

素因数の和:2565

約数の個数: 24

約数和(自身を含む): 39421872

約数和(自身を除く): 20700692

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2113, 2215, 4226, 4430, 8452, 8860, 10565, 21130, 42260, 936059, 1872118, 3744236, 4680295, 9360590, 18721180]

約数ペア:

[(1, 18721180), (2, 9360590), (4, 4680295), (5, 3744236), (10, 1872118), (20, 936059), (443, 42260), (886, 21130), (1772, 10565), (2113, 8860), (2215, 8452), (4226, 4430)]