20788251

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:547

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11352549

約数列:

[1, 3, 11, 23, 33, 61, 69, 183, 253, 449, 671, 759, 1347, 1403, 2013, 4209, 4939, 10327, 14817, 15433, 27389, 30981, 46299, 82167, 113597, 301279, 340791, 629947, 903837, 1889841, 6929417, 20788251]

約数ペア:

[(1, 20788251), (3, 6929417), (11, 1889841), (23, 903837), (33, 629947), (61, 340791), (69, 301279), (183, 113597), (253, 82167), (449, 46299), (671, 30981), (759, 27389), (1347, 15433), (1403, 14817), (2013, 10327), (4209, 4939)]