19605915

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20747}}^1$

素因数の和:20768

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 20230245

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20747, 62241, 103735, 145229, 186723, 311205, 435687, 560169, 726145, 933615, 1307061, 2178435, 2800845, 3921183, 6535305, 19605915]

約数ペア:

[(1, 19605915), (3, 6535305), (5, 3921183), (7, 2800845), (9, 2178435), (15, 1307061), (21, 933615), (27, 726145), (35, 560169), (45, 435687), (63, 311205), (105, 186723), (135, 145229), (189, 103735), (315, 62241), (945, 20747)]