20958995

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5381}}^1$

素因数の和:5446

約数の個数: 16

約数和(自身を含む): 27125280

約数和(自身を除く): 6166285

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5381, 26905, 102239, 220621, 511195, 1103105, 4191799, 20958995]

約数ペア:

[(1, 20958995), (5, 4191799), (19, 1103105), (41, 511195), (95, 220621), (205, 102239), (779, 26905), (3895, 5381)]