7998221

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:126

約数の個数: 36

約数和(自身を含む): 10916640

約数和(自身を除く): 2918419

約数列:

[1, 7, 11, 19, 49, 71, 77, 121, 133, 209, 497, 539, 781, 847, 931, 1349, 1463, 2299, 3479, 5467, 5929, 8591, 9443, 10241, 14839, 16093, 38269, 60137, 66101, 103873, 112651, 163229, 420959, 727111, 1142603, 7998221]

約数ペア:

[(1, 7998221), (7, 1142603), (11, 727111), (19, 420959), (49, 163229), (71, 112651), (77, 103873), (121, 66101), (133, 60137), (209, 38269), (497, 16093), (539, 14839), (781, 10241), (847, 9443), (931, 8591), (1349, 5929), (1463, 5467), (2299, 3479)]