21172023

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13757}}^1$

素因数の和:13788

約数の個数: 20

約数和(自身を含む): 33294360

約数和(自身を除く): 12122337

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13757, 41271, 123813, 261383, 371439, 784149, 1114317, 2352447, 7057341, 21172023]

約数ペア:

[(1, 21172023), (3, 7057341), (9, 2352447), (19, 1114317), (27, 784149), (57, 371439), (81, 261383), (171, 123813), (513, 41271), (1539, 13757)]