19952009

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4889}}^1$

素因数の和:4960

約数の個数: 16

約数和(自身を含む): 25349760

約数和(自身を除く): 5397751

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 4889, 34223, 53779, 259117, 376453, 1813819, 2850287, 19952009]

約数ペア:

[(1, 19952009), (7, 2850287), (11, 1813819), (53, 376453), (77, 259117), (371, 53779), (583, 34223), (4081, 4889)]