20638660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147419}}^1$

素因数の和:147435

約数の個数: 24

約数和(自身を含む): 49533120

約数和(自身を除く): 28894460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147419, 294838, 589676, 737095, 1031933, 1474190, 2063866, 2948380, 4127732, 5159665, 10319330, 20638660]

約数ペア:

[(1, 20638660), (2, 10319330), (4, 5159665), (5, 4127732), (7, 2948380), (10, 2063866), (14, 1474190), (20, 1031933), (28, 737095), (35, 589676), (70, 294838), (140, 147419)]