21000921891

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{2131}}^1\times {\mathrm{23633}}^1$

素因数の和:25906

約数の個数: 16

約数和(自身を含む): 28217105280

約数和(自身を除く): 7216183389

約数列:

[1, 3, 139, 417, 2131, 6393, 23633, 70899, 296209, 888627, 3284987, 9854961, 50361923, 151085769, 7000307297, 21000921891]

約数ペア:

[(1, 21000921891), (3, 7000307297), (139, 151085769), (417, 50361923), (2131, 9854961), (6393, 3284987), (23633, 888627), (70899, 296209)]