40208900

素因数分解:

$2^2\times 5^2\times {\mathrm{402089}}^1$

素因数の和:402103

約数の個数: 18

約数和(自身を含む): 87253530

約数和(自身を除く): 47044630

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 402089, 804178, 1608356, 2010445, 4020890, 8041780, 10052225, 20104450, 40208900]

約数ペア:

[(1, 40208900), (2, 20104450), (4, 10052225), (5, 8041780), (10, 4020890), (20, 2010445), (25, 1608356), (50, 804178), (100, 402089)]