81108181

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:159

約数の個数: 40

約数和(自身を含む): 107289504

約数和(自身を除く): 26181323

約数列:

[1, 7, 11, 37, 49, 77, 83, 259, 343, 407, 539, 581, 913, 1813, 2401, 2849, 3071, 3773, 4067, 6391, 12691, 19943, 21497, 26411, 28469, 33781, 44737, 88837, 139601, 150479, 199283, 236467, 313159, 977207, 1053353, 1655269, 2192113, 7373471, 11586883, 81108181]

約数ペア:

[(1, 81108181), (7, 11586883), (11, 7373471), (37, 2192113), (49, 1655269), (77, 1053353), (83, 977207), (259, 313159), (343, 236467), (407, 199283), (539, 150479), (581, 139601), (913, 88837), (1813, 44737), (2401, 33781), (2849, 28469), (3071, 26411), (3773, 21497), (4067, 19943), (6391, 12691)]