20858900

素因数分解:

$2^2\times 5^2\times {\mathrm{208589}}^1$

素因数の和:208603

約数の個数: 18

約数和(自身を含む): 45264030

約数和(自身を除く): 24405130

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 208589, 417178, 834356, 1042945, 2085890, 4171780, 5214725, 10429450, 20858900]

約数ペア:

[(1, 20858900), (2, 10429450), (4, 5214725), (5, 4171780), (10, 2085890), (20, 1042945), (25, 834356), (50, 417178), (100, 208589)]