18866660

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{3947}}^1$

素因数の和:4195

約数の個数: 24

約数和(自身を含む): 39795840

約数和(自身を除く): 20929180

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 3947, 4780, 7894, 15788, 19735, 39470, 78940, 943333, 1886666, 3773332, 4716665, 9433330, 18866660]

約数ペア:

[(1, 18866660), (2, 9433330), (4, 4716665), (5, 3773332), (10, 1886666), (20, 943333), (239, 78940), (478, 39470), (956, 19735), (1195, 15788), (2390, 7894), (3947, 4780)]