21568257

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4861}}^1$

素因数の和:4913

約数の個数: 24

約数和(自身を含む): 34131240

約数和(自身を除く): 12562983

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4861, 14583, 43749, 82637, 140969, 247911, 422907, 743733, 1268721, 2396473, 7189419, 21568257]

約数ペア:

[(1, 21568257), (3, 7189419), (9, 2396473), (17, 1268721), (29, 743733), (51, 422907), (87, 247911), (153, 140969), (261, 82637), (493, 43749), (1479, 14583), (4437, 4861)]