12821991

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{701}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 21385728

約数和(自身を除く): 8563737

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 201, 273, 469, 701, 871, 1407, 2103, 2613, 4907, 6097, 9113, 14721, 18291, 27339, 46967, 63791, 140901, 191373, 328769, 610571, 986307, 1831713, 4273997, 12821991]

約数ペア:

[(1, 12821991), (3, 4273997), (7, 1831713), (13, 986307), (21, 610571), (39, 328769), (67, 191373), (91, 140901), (201, 63791), (273, 46967), (469, 27339), (701, 18291), (871, 14721), (1407, 9113), (2103, 6097), (2613, 4907)]