19661319

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{19681}}^1$

素因数の和:19727

約数の個数: 16

約数和(自身を含む): 29916640

約数和(自身を除く): 10255321

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 19681, 59043, 177129, 531387, 728197, 2184591, 6553773, 19661319]

約数ペア:

[(1, 19661319), (3, 6553773), (9, 2184591), (27, 728197), (37, 531387), (111, 177129), (333, 59043), (999, 19681)]