19943889

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{15569}}^1$

素因数の和:15640

約数の個数: 16

約数和(自身を含む): 30890880

約数和(自身を除く): 10946991

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 15569, 46707, 108983, 326949, 949709, 2849127, 6647963, 19943889]

約数ペア:

[(1, 19943889), (3, 6647963), (7, 2849127), (21, 949709), (61, 326949), (183, 108983), (427, 46707), (1281, 15569)]