20480660

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14423}}^1$

素因数の和:14503

約数の個数: 24

約数和(自身を含む): 43618176

約数和(自身を除く): 23137516

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14423, 28846, 57692, 72115, 144230, 288460, 1024033, 2048066, 4096132, 5120165, 10240330, 20480660]

約数ペア:

[(1, 20480660), (2, 10240330), (4, 5120165), (5, 4096132), (10, 2048066), (20, 1024033), (71, 288460), (142, 144230), (284, 72115), (355, 57692), (710, 28846), (1420, 14423)]