21239339

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:658

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 2952661

約数列:

[1, 11, 29, 139, 319, 479, 1529, 4031, 5269, 13891, 44341, 66581, 152801, 732391, 1930849, 21239339]

約数ペア:

[(1, 21239339), (11, 1930849), (29, 732391), (139, 152801), (319, 66581), (479, 44341), (1529, 13891), (4031, 5269)]