19905320

素因数分解:

$2^3\times 5^1\times {\mathrm{497633}}^1$

素因数の和:497644

約数の個数: 16

約数和(自身を含む): 44787060

約数和(自身を除く): 24881740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497633, 995266, 1990532, 2488165, 3981064, 4976330, 9952660, 19905320]

約数ペア:

[(1, 19905320), (2, 9952660), (4, 4976330), (5, 3981064), (8, 2488165), (10, 1990532), (20, 995266), (40, 497633)]