19399257

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{1723}}^1$

素因数の和:1874

約数の個数: 20

約数和(自身を含む): 29204560

約数和(自身を除く): 9805303

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 1723, 3753, 5169, 11259, 15507, 46521, 139563, 239497, 718491, 2155473, 6466419, 19399257]

約数ペア:

[(1, 19399257), (3, 6466419), (9, 2155473), (27, 718491), (81, 239497), (139, 139563), (417, 46521), (1251, 15507), (1723, 11259), (3753, 5169)]