2009990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 24

約数和(自身を含む): 3762720

約数和(自身を除く): 1752730

約数列:

[1, 2, 5, 10, 29, 58, 145, 239, 290, 478, 841, 1195, 1682, 2390, 4205, 6931, 8410, 13862, 34655, 69310, 200999, 401998, 1004995, 2009990]

約数ペア:

[(1, 2009990), (2, 1004995), (5, 401998), (10, 200999), (29, 69310), (58, 34655), (145, 13862), (239, 8410), (290, 6931), (478, 4205), (841, 2390), (1195, 1682)]