19666493

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:174

約数の個数: 36

約数和(自身を含む): 26199936

約数和(自身を除く): 6533443

約数列:

[1, 7, 11, 31, 49, 77, 107, 121, 217, 341, 539, 749, 847, 1177, 1519, 2387, 3317, 3751, 5243, 5929, 8239, 12947, 16709, 23219, 26257, 36487, 57673, 90629, 162533, 183799, 255409, 401357, 634403, 1787863, 2809499, 19666493]

約数ペア:

[(1, 19666493), (7, 2809499), (11, 1787863), (31, 634403), (49, 401357), (77, 255409), (107, 183799), (121, 162533), (217, 90629), (341, 57673), (539, 36487), (749, 26257), (847, 23219), (1177, 16709), (1519, 12947), (2387, 8239), (3317, 5929), (3751, 5243)]