21090500

素因数分解:

$2^2\times 5^3\times {\mathrm{42181}}^1$

素因数の和:42200

約数の個数: 24

約数和(自身を含む): 46062744

約数和(自身を除く): 24972244

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 42181, 84362, 168724, 210905, 421810, 843620, 1054525, 2109050, 4218100, 5272625, 10545250, 21090500]

約数ペア:

[(1, 21090500), (2, 10545250), (4, 5272625), (5, 4218100), (10, 2109050), (20, 1054525), (25, 843620), (50, 421810), (100, 210905), (125, 168724), (250, 84362), (500, 42181)]