20907579

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3121}}^1$

素因数の和:3171

約数の個数: 32

約数和(自身を含む): 35965440

約数和(自身を除く): 15057861

約数列:

[1, 3, 7, 11, 21, 29, 33, 77, 87, 203, 231, 319, 609, 957, 2233, 3121, 6699, 9363, 21847, 34331, 65541, 90509, 102993, 240317, 271527, 633563, 720951, 995599, 1900689, 2986797, 6969193, 20907579]

約数ペア:

[(1, 20907579), (3, 6969193), (7, 2986797), (11, 1900689), (21, 995599), (29, 720951), (33, 633563), (77, 271527), (87, 240317), (203, 102993), (231, 90509), (319, 65541), (609, 34331), (957, 21847), (2233, 9363), (3121, 6699)]