21981739

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 24696000

約数和(自身を除く): 2714261

約数列:

[1, 13, 29, 199, 293, 377, 2587, 3809, 5771, 8497, 58307, 75023, 110461, 757991, 1690903, 21981739]

約数ペア:

[(1, 21981739), (13, 1690903), (29, 757991), (199, 110461), (293, 75023), (377, 58307), (2587, 8497), (3809, 5771)]