21987493

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{599}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 2895707

約数列:

[1, 11, 47, 71, 517, 599, 781, 3337, 6589, 28153, 36707, 42529, 309683, 467819, 1998863, 21987493]

約数ペア:

[(1, 21987493), (11, 1998863), (47, 467819), (71, 309683), (517, 42529), (599, 36707), (781, 28153), (3337, 6589)]