21069315

素因数分解:

$3^5\times 5^1\times {\mathrm{17341}}^1$

素因数の和:17361

約数の個数: 24

約数和(自身を含む): 37874928

約数和(自身を除く): 16805613

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17341, 52023, 86705, 156069, 260115, 468207, 780345, 1404621, 2341035, 4213863, 7023105, 21069315]

約数ペア:

[(1, 21069315), (3, 7023105), (5, 4213863), (9, 2341035), (15, 1404621), (27, 780345), (45, 468207), (81, 260115), (135, 156069), (243, 86705), (405, 52023), (1215, 17341)]