21089868908

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{941}}^1\times {\mathrm{329591}}^1$

素因数の和:330553

約数の個数: 24

約数和(自身を含む): 39119933664

約数和(自身を除く): 18030064756

約数列:

[1, 2, 4, 17, 34, 68, 941, 1882, 3764, 15997, 31994, 63988, 329591, 659182, 1318364, 5603047, 11206094, 22412188, 310145131, 620290262, 1240580524, 5272467227, 10544934454, 21089868908]

約数ペア:

[(1, 21089868908), (2, 10544934454), (4, 5272467227), (17, 1240580524), (34, 620290262), (68, 310145131), (941, 22412188), (1882, 11206094), (3764, 5603047), (15997, 1318364), (31994, 659182), (63988, 329591)]