18872020

素因数分解:

$2^2\times 5^1\times {\mathrm{943601}}^1$

素因数の和:943610

約数の個数: 12

約数和(自身を含む): 39631284

約数和(自身を除く): 20759264

約数列:

[1, 2, 4, 5, 10, 20, 943601, 1887202, 3774404, 4718005, 9436010, 18872020]

約数ペア:

[(1, 18872020), (2, 9436010), (4, 4718005), (5, 3774404), (10, 1887202), (20, 943601)]