21577491

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{593}}^1$

素因数の和:923

約数の個数: 24

約数和(自身を含む): 33729696

約数和(自身を除く): 12152205

約数列:

[1, 3, 9, 13, 39, 117, 311, 593, 933, 1779, 2799, 4043, 5337, 7709, 12129, 23127, 36387, 69381, 184423, 553269, 1659807, 2397499, 7192497, 21577491]

約数ペア:

[(1, 21577491), (3, 7192497), (9, 2397499), (13, 1659807), (39, 553269), (117, 184423), (311, 69381), (593, 36387), (933, 23127), (1779, 12129), (2799, 7709), (4043, 5337)]