19389167

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 23040000

約数和(自身を除く): 3650833

約数列:

[1, 7, 31, 199, 217, 449, 1393, 3143, 6169, 13919, 43183, 89351, 97433, 625457, 2769881, 19389167]

約数ペア:

[(1, 19389167), (7, 2769881), (31, 625457), (199, 97433), (217, 89351), (449, 43183), (1393, 13919), (3143, 6169)]