20145920991

素因数分解:

$3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{727}}^1\times {\mathrm{4243}}^1$

素因数の和:5291

約数の個数: 32

約数和(自身を含む): 30846885888

約数和(自身を除く): 10700964897

約数列:

[1, 3, 7, 21, 311, 727, 933, 2177, 2181, 4243, 5089, 6531, 12729, 15267, 29701, 89103, 226097, 678291, 1319573, 1582679, 3084661, 3958719, 4748037, 9237011, 9253983, 21592627, 27711033, 64777881, 959329571, 2877988713, 6715306997, 20145920991]

約数ペア:

[(1, 20145920991), (3, 6715306997), (7, 2877988713), (21, 959329571), (311, 64777881), (727, 27711033), (933, 21592627), (2177, 9253983), (2181, 9237011), (4243, 4748037), (5089, 3958719), (6531, 3084661), (12729, 1582679), (15267, 1319573), (29701, 678291), (89103, 226097)]