201981620

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{10009}}^1$

素因数の和:11027

約数の個数: 24

約数和(自身を含む): 424624200

約数和(自身を除く): 222642580

約数列:

[1, 2, 4, 5, 10, 20, 1009, 2018, 4036, 5045, 10009, 10090, 20018, 20180, 40036, 50045, 100090, 200180, 10099081, 20198162, 40396324, 50495405, 100990810, 201981620]

約数ペア:

[(1, 201981620), (2, 100990810), (4, 50495405), (5, 40396324), (10, 20198162), (20, 10099081), (1009, 200180), (2018, 100090), (4036, 50045), (5045, 40036), (10009, 20180), (10090, 20018)]