28478660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{203419}}^1$

素因数の和:203435

約数の個数: 24

約数和(自身を含む): 68349120

約数和(自身を除く): 39870460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 203419, 406838, 813676, 1017095, 1423933, 2034190, 2847866, 4068380, 5695732, 7119665, 14239330, 28478660]

約数ペア:

[(1, 28478660), (2, 14239330), (4, 7119665), (5, 5695732), (7, 4068380), (10, 2847866), (14, 2034190), (20, 1423933), (28, 1017095), (35, 813676), (70, 406838), (140, 203419)]