28318719

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 47458656

約数和(自身を除く): 19139937

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 121, 143, 187, 221, 353, 363, 429, 561, 663, 1059, 1573, 2057, 2431, 3883, 4589, 4719, 6001, 6171, 7293, 11649, 13767, 18003, 26741, 42713, 50479, 66011, 78013, 80223, 128139, 151437, 198033, 234039, 555269, 726121, 858143, 1665807, 2178363, 2574429, 9439573, 28318719]

約数ペア:

[(1, 28318719), (3, 9439573), (11, 2574429), (13, 2178363), (17, 1665807), (33, 858143), (39, 726121), (51, 555269), (121, 234039), (143, 198033), (187, 151437), (221, 128139), (353, 80223), (363, 78013), (429, 66011), (561, 50479), (663, 42713), (1059, 26741), (1573, 18003), (2057, 13767), (2431, 11649), (3883, 7293), (4589, 6171), (4719, 6001)]