20178627

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 32747520

約数和(自身を除く): 12568893

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 491, 721, 1473, 1957, 2163, 3437, 5871, 9329, 10311, 13699, 27987, 41097, 50573, 65303, 151719, 195909, 354011, 960887, 1062033, 2882661, 6726209, 20178627]

約数ペア:

[(1, 20178627), (3, 6726209), (7, 2882661), (19, 1062033), (21, 960887), (57, 354011), (103, 195909), (133, 151719), (309, 65303), (399, 50573), (491, 41097), (721, 27987), (1473, 13699), (1957, 10311), (2163, 9329), (3437, 5871)]