20004500

素因数分解:

$2^2\times 5^3\times {\mathrm{40009}}^1$

素因数の和:40028

約数の個数: 24

約数和(自身を含む): 43690920

約数和(自身を除く): 23686420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 40009, 80018, 160036, 200045, 400090, 800180, 1000225, 2000450, 4000900, 5001125, 10002250, 20004500]

約数ペア:

[(1, 20004500), (2, 10002250), (4, 5001125), (5, 4000900), (10, 2000450), (20, 1000225), (25, 800180), (50, 400090), (100, 200045), (125, 160036), (250, 80018), (500, 40009)]