21081465

素因数分解:

$3^5\times 5^1\times {\mathrm{17351}}^1$

素因数の和:17371

約数の個数: 24

約数和(自身を含む): 37896768

約数和(自身を除く): 16815303

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17351, 52053, 86755, 156159, 260265, 468477, 780795, 1405431, 2342385, 4216293, 7027155, 21081465]

約数ペア:

[(1, 21081465), (3, 7027155), (5, 4216293), (9, 2342385), (15, 1405431), (27, 780795), (45, 468477), (81, 260265), (135, 156159), (243, 86755), (405, 52053), (1215, 17351)]