18897140

素因数分解:

$2^2\times 5^1\times {\mathrm{944857}}^1$

素因数の和:944866

約数の個数: 12

約数和(自身を含む): 39684036

約数和(自身を除く): 20786896

約数列:

[1, 2, 4, 5, 10, 20, 944857, 1889714, 3779428, 4724285, 9448570, 18897140]

約数ペア:

[(1, 18897140), (2, 9448570), (4, 4724285), (5, 3779428), (10, 1889714), (20, 944857)]