397779889

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{239}}^1\times {\mathrm{443}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 457994880

約数和(自身を除く): 60214991

約数列:

[1, 13, 17, 221, 239, 289, 443, 3107, 3757, 4063, 5759, 7531, 52819, 69071, 97903, 105877, 128027, 897923, 1376401, 1664351, 1799909, 23398817, 30598453, 397779889]

約数ペア:

[(1, 397779889), (13, 30598453), (17, 23398817), (221, 1799909), (239, 1664351), (289, 1376401), (443, 897923), (3107, 128027), (3757, 105877), (4063, 97903), (5759, 69071), (7531, 52819)]