800900

素因数分解:

$2^2\times 5^2\times {\mathrm{8009}}^1$

素因数の和:8023

約数の個数: 18

約数和(自身を含む): 1738170

約数和(自身を除く): 937270

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 8009, 16018, 32036, 40045, 80090, 160180, 200225, 400450, 800900]

約数ペア:

[(1, 800900), (2, 400450), (4, 200225), (5, 160180), (10, 80090), (20, 40045), (25, 32036), (50, 16018), (100, 8009)]