20647768

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1459}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 40734000

約数和(自身を除く): 20086232

約数列:

[1, 2, 4, 8, 29, 58, 61, 116, 122, 232, 244, 488, 1459, 1769, 2918, 3538, 5836, 7076, 11672, 14152, 42311, 84622, 88999, 169244, 177998, 338488, 355996, 711992, 2580971, 5161942, 10323884, 20647768]

約数ペア:

[(1, 20647768), (2, 10323884), (4, 5161942), (8, 2580971), (29, 711992), (58, 355996), (61, 338488), (116, 177998), (122, 169244), (232, 88999), (244, 84622), (488, 42311), (1459, 14152), (1769, 11672), (2918, 7076), (3538, 5836)]