19904319

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{5381}}^1$

素因数の和:5527

約数の個数: 16

約数和(自身を含む): 29708640

約数和(自身を除く): 9804321

約数列:

[1, 3, 9, 27, 137, 411, 1233, 3699, 5381, 16143, 48429, 145287, 737197, 2211591, 6634773, 19904319]

約数ペア:

[(1, 19904319), (3, 6634773), (9, 2211591), (27, 737197), (137, 145287), (411, 48429), (1233, 16143), (3699, 5381)]