20320900

素因数分解:

$2^2\times 5^2\times {\mathrm{203209}}^1$

素因数の和:203223

約数の個数: 18

約数和(自身を含む): 44096570

約数和(自身を除く): 23775670

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 203209, 406418, 812836, 1016045, 2032090, 4064180, 5080225, 10160450, 20320900]

約数ペア:

[(1, 20320900), (2, 10160450), (4, 5080225), (5, 4064180), (10, 2032090), (20, 1016045), (25, 812836), (50, 406418), (100, 203209)]