19909851

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{8369}}^1$

素因数の和:8446

約数の個数: 16

約数和(自身を含む): 29060640

約数和(自身を除く): 9150789

約数列:

[1, 3, 13, 39, 61, 183, 793, 2379, 8369, 25107, 108797, 326391, 510509, 1531527, 6636617, 19909851]

約数ペア:

[(1, 19909851), (3, 6636617), (13, 1531527), (39, 510509), (61, 326391), (183, 108797), (793, 25107), (2379, 8369)]