199208020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{905491}}^1$

素因数の和:905511

約数の個数: 24

約数和(自身を含む): 456367968

約数和(自身を除く): 257159948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 905491, 1810982, 3621964, 4527455, 9054910, 9960401, 18109820, 19920802, 39841604, 49802005, 99604010, 199208020]

約数ペア:

[(1, 199208020), (2, 99604010), (4, 49802005), (5, 39841604), (10, 19920802), (11, 18109820), (20, 9960401), (22, 9054910), (44, 4527455), (55, 3621964), (110, 1810982), (220, 905491)]