81567717

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20771}}^1$

素因数の和:20809

約数の個数: 32

約数和(自身を含む): 143576064

約数和(自身を除く): 62008347

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 20771, 62313, 145397, 228481, 353107, 436191, 685443, 1059321, 1599367, 2471749, 3884177, 4798101, 7415247, 11652531, 27189239, 81567717]

約数ペア:

[(1, 81567717), (3, 27189239), (7, 11652531), (11, 7415247), (17, 4798101), (21, 3884177), (33, 2471749), (51, 1599367), (77, 1059321), (119, 685443), (187, 436191), (231, 353107), (357, 228481), (561, 145397), (1309, 62313), (3927, 20771)]