20641688

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{36341}}^1$

素因数の和:36418

約数の個数: 16

約数和(自身を含む): 39249360

約数和(自身を除く): 18607672

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 36341, 72682, 145364, 290728, 2580211, 5160422, 10320844, 20641688]

約数ペア:

[(1, 20641688), (2, 10320844), (4, 5160422), (8, 2580211), (71, 290728), (142, 145364), (284, 72682), (568, 36341)]