19909287

素因数分解:

$3^3\times {\mathrm{311}}^1\times {\mathrm{2371}}^1$

素因数の和:2691

約数の個数: 16

約数和(自身を含む): 29602560

約数和(自身を除く): 9693273

約数列:

[1, 3, 9, 27, 311, 933, 2371, 2799, 7113, 8397, 21339, 64017, 737381, 2212143, 6636429, 19909287]

約数ペア:

[(1, 19909287), (3, 6636429), (9, 2212143), (27, 737381), (311, 64017), (933, 21339), (2371, 8397), (2799, 7113)]