18220719

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{32479}}^1$

素因数の和:32510

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 9842001

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 32479, 97437, 357269, 552143, 1071807, 1656429, 6073573, 18220719]

約数ペア:

[(1, 18220719), (3, 6073573), (11, 1656429), (17, 1071807), (33, 552143), (51, 357269), (187, 97437), (561, 32479)]