2001800

素因数分解:

$2^3\times 5^2\times {\mathrm{10009}}^1$

素因数の和:10025

約数の個数: 24

約数和(自身を含む): 4654650

約数和(自身を除く): 2652850

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 10009, 20018, 40036, 50045, 80072, 100090, 200180, 250225, 400360, 500450, 1000900, 2001800]

約数ペア:

[(1, 2001800), (2, 1000900), (4, 500450), (5, 400360), (8, 250225), (10, 200180), (20, 100090), (25, 80072), (40, 50045), (50, 40036), (100, 20018), (200, 10009)]