208575729

素因数分解:

$3^4\times {\mathrm{251}}^1\times {\mathrm{10259}}^1$

素因数の和:10522

約数の個数: 20

約数和(自身を含む): 312847920

約数和(自身を除く): 104272191

約数列:

[1, 3, 9, 27, 81, 251, 753, 2259, 6777, 10259, 20331, 30777, 92331, 276993, 830979, 2575009, 7725027, 23175081, 69525243, 208575729]

約数ペア:

[(1, 208575729), (3, 69525243), (9, 23175081), (27, 7725027), (81, 2575009), (251, 830979), (753, 276993), (2259, 92331), (6777, 30777), (10259, 20331)]