20158900

素因数分解:

$2^2\times 5^2\times {\mathrm{201589}}^1$

素因数の和:201603

約数の個数: 18

約数和(自身を含む): 43745030

約数和(自身を除く): 23586130

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201589, 403178, 806356, 1007945, 2015890, 4031780, 5039725, 10079450, 20158900]

約数ペア:

[(1, 20158900), (2, 10079450), (4, 5039725), (5, 4031780), (10, 2015890), (20, 1007945), (25, 806356), (50, 403178), (100, 201589)]