20828727

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{503}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 31135104

約数和(自身を除く): 10306377

約数列:

[1, 3, 9, 43, 107, 129, 321, 387, 503, 963, 1509, 4527, 4601, 13803, 21629, 41409, 53821, 64887, 161463, 194661, 484389, 2314303, 6942909, 20828727]

約数ペア:

[(1, 20828727), (3, 6942909), (9, 2314303), (43, 484389), (107, 194661), (129, 161463), (321, 64887), (387, 53821), (503, 41409), (963, 21629), (1509, 13803), (4527, 4601)]