18207959

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 36

約数和(自身を含む): 24198552

約数和(自身を除く): 5990593

約数列:

[1, 7, 11, 37, 49, 77, 83, 121, 259, 407, 539, 581, 847, 913, 1813, 2849, 3071, 4067, 4477, 5929, 6391, 10043, 19943, 21497, 31339, 33781, 44737, 70301, 150479, 219373, 236467, 371591, 492107, 1655269, 2601137, 18207959]

約数ペア:

[(1, 18207959), (7, 2601137), (11, 1655269), (37, 492107), (49, 371591), (77, 236467), (83, 219373), (121, 150479), (259, 70301), (407, 44737), (539, 33781), (581, 31339), (847, 21497), (913, 19943), (1813, 10043), (2849, 6391), (3071, 5929), (4067, 4477)]