20364820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145463}}^1$

素因数の和:145479

約数の個数: 24

約数和(自身を含む): 48875904

約数和(自身を除く): 28511084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145463, 290926, 581852, 727315, 1018241, 1454630, 2036482, 2909260, 4072964, 5091205, 10182410, 20364820]

約数ペア:

[(1, 20364820), (2, 10182410), (4, 5091205), (5, 4072964), (7, 2909260), (10, 2036482), (14, 1454630), (20, 1018241), (28, 727315), (35, 581852), (70, 290926), (140, 145463)]