21561288

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{128341}}^1$

素因数の和:128357

約数の個数: 32

約数和(自身を含む): 61604160

約数和(自身を除く): 40042872

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 128341, 256682, 385023, 513364, 770046, 898387, 1026728, 1540092, 1796774, 2695161, 3080184, 3593548, 5390322, 7187096, 10780644, 21561288]

約数ペア:

[(1, 21561288), (2, 10780644), (3, 7187096), (4, 5390322), (6, 3593548), (7, 3080184), (8, 2695161), (12, 1796774), (14, 1540092), (21, 1026728), (24, 898387), (28, 770046), (42, 513364), (56, 385023), (84, 256682), (168, 128341)]