20644155

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65537}}^1$

素因数の和:65555

約数の個数: 24

約数和(自身を含む): 40895712

約数和(自身を除く): 20251557

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65537, 196611, 327685, 458759, 589833, 983055, 1376277, 2293795, 2949165, 4128831, 6881385, 20644155]

約数ペア:

[(1, 20644155), (3, 6881385), (5, 4128831), (7, 2949165), (9, 2293795), (15, 1376277), (21, 983055), (35, 589833), (45, 458759), (63, 327685), (105, 196611), (315, 65537)]