21984369

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{853}}^1$

素因数の和:949

約数の個数: 24

約数和(自身を含む): 32711616

約数和(自身を除く): 10727247

約数列:

[1, 3, 11, 33, 71, 121, 213, 363, 781, 853, 2343, 2559, 8591, 9383, 25773, 28149, 60563, 103213, 181689, 309639, 666193, 1998579, 7328123, 21984369]

約数ペア:

[(1, 21984369), (3, 7328123), (11, 1998579), (33, 666193), (71, 309639), (121, 181689), (213, 103213), (363, 60563), (781, 28149), (853, 25773), (2343, 9383), (2559, 8591)]