20856485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6827}}^1$

素因数の和:6892

約数の個数: 16

約数和(自身を含む): 27530496

約数和(自身を除く): 6674011

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6827, 34135, 88751, 320869, 443755, 1604345, 4171297, 20856485]

約数ペア:

[(1, 20856485), (5, 4171297), (13, 1604345), (47, 443755), (65, 320869), (235, 88751), (611, 34135), (3055, 6827)]