20180080

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1307}}^1$

素因数の和:1513

約数の個数: 40

約数和(自身を含む): 47197872

約数和(自身を除く): 27017792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1307, 1544, 1930, 2614, 3088, 3860, 5228, 6535, 7720, 10456, 13070, 15440, 20912, 26140, 52280, 104560, 252251, 504502, 1009004, 1261255, 2018008, 2522510, 4036016, 5045020, 10090040, 20180080]

約数ペア:

[(1, 20180080), (2, 10090040), (4, 5045020), (5, 4036016), (8, 2522510), (10, 2018008), (16, 1261255), (20, 1009004), (40, 504502), (80, 252251), (193, 104560), (386, 52280), (772, 26140), (965, 20912), (1307, 15440), (1544, 13070), (1930, 10456), (2614, 7720), (3088, 6535), (3860, 5228)]