4000900

素因数分解:

$2^2\times 5^2\times {\mathrm{40009}}^1$

素因数の和:40023

約数の個数: 18

約数和(自身を含む): 8682170

約数和(自身を除く): 4681270

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 40009, 80018, 160036, 200045, 400090, 800180, 1000225, 2000450, 4000900]

約数ペア:

[(1, 4000900), (2, 2000450), (4, 1000225), (5, 800180), (10, 400090), (20, 200045), (25, 160036), (50, 80018), (100, 40009)]