200920900

素因数分解:

$2^2\times 5^2\times {\mathrm{2009209}}^1$

素因数の和:2009223

約数の個数: 18

約数和(自身を含む): 435998570

約数和(自身を除く): 235077670

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 2009209, 4018418, 8036836, 10046045, 20092090, 40184180, 50230225, 100460450, 200920900]

約数ペア:

[(1, 200920900), (2, 100460450), (4, 50230225), (5, 40184180), (10, 20092090), (20, 10046045), (25, 8036836), (50, 4018418), (100, 2009209)]