19758321

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1831}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 31437120

約数和(自身を除く): 11678799

約数列:

[1, 3, 9, 11, 33, 99, 109, 327, 981, 1199, 1831, 3597, 5493, 10791, 16479, 20141, 60423, 181269, 199579, 598737, 1796211, 2195369, 6586107, 19758321]

約数ペア:

[(1, 19758321), (3, 6586107), (9, 2195369), (11, 1796211), (33, 598737), (99, 199579), (109, 181269), (327, 60423), (981, 20141), (1199, 16479), (1831, 10791), (3597, 5493)]