20307885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8011}}^1$

素因数の和:8045

約数の個数: 24

約数和(自身を含む): 35188704

約数和(自身を除く): 14880819

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8011, 24033, 40055, 104143, 120165, 312429, 520715, 1353859, 1562145, 4061577, 6769295, 20307885]

約数ペア:

[(1, 20307885), (3, 6769295), (5, 4061577), (13, 1562145), (15, 1353859), (39, 520715), (65, 312429), (169, 120165), (195, 104143), (507, 40055), (845, 24033), (2535, 8011)]