21084219

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20023}}^1$

素因数の和:20048

約数の個数: 20

約数和(自身を含む): 33920656

約数和(自身を除く): 12836437

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20023, 60069, 180207, 260299, 540621, 780897, 1621863, 2342691, 7028073, 21084219]

約数ペア:

[(1, 21084219), (3, 7028073), (9, 2342691), (13, 1621863), (27, 780897), (39, 540621), (81, 260299), (117, 180207), (351, 60069), (1053, 20023)]