19881323

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{8329}}^1$

素因数の和:8378

約数の個数: 16

約数和(自身を含む): 25589760

約数和(自身を除く): 5708437

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 8329, 58303, 91619, 258199, 641333, 1807393, 2840189, 19881323]

約数ペア:

[(1, 19881323), (7, 2840189), (11, 1807393), (31, 641333), (77, 258199), (217, 91619), (341, 58303), (2387, 8329)]