20198020

素因数分解:

$2^2\times 5^1\times {\mathrm{1009901}}^1$

素因数の和:1009910

約数の個数: 12

約数和(自身を含む): 42415884

約数和(自身を除く): 22217864

約数列:

[1, 2, 4, 5, 10, 20, 1009901, 2019802, 4039604, 5049505, 10099010, 20198020]

約数ペア:

[(1, 20198020), (2, 10099010), (4, 5049505), (5, 4039604), (10, 2019802), (20, 1009901)]