16988279

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:707

約数の個数: 24

約数和(自身を含む): 22063104

約数和(自身を除く): 5074825

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 647, 847, 2387, 3751, 4529, 7117, 20057, 26257, 49819, 78287, 140399, 220627, 548009, 1544389, 2426897, 16988279]

約数ペア:

[(1, 16988279), (7, 2426897), (11, 1544389), (31, 548009), (77, 220627), (121, 140399), (217, 78287), (341, 49819), (647, 26257), (847, 20057), (2387, 7117), (3751, 4529)]