216291231

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 357084000

約数和(自身を除く): 140792769

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 149, 171, 247, 447, 653, 741, 1341, 1937, 1959, 2223, 2831, 5811, 5877, 8489, 8493, 12407, 17433, 25467, 25479, 36803, 37221, 76401, 97297, 110409, 111663, 161291, 291891, 331227, 483873, 875673, 1264861, 1451619, 1848643, 3794583, 5545929, 11383749, 16637787, 24032359, 72097077, 216291231]

約数ペア:

[(1, 216291231), (3, 72097077), (9, 24032359), (13, 16637787), (19, 11383749), (39, 5545929), (57, 3794583), (117, 1848643), (149, 1451619), (171, 1264861), (247, 875673), (447, 483873), (653, 331227), (741, 291891), (1341, 161291), (1937, 111663), (1959, 110409), (2223, 97297), (2831, 76401), (5811, 37221), (5877, 36803), (8489, 25479), (8493, 25467), (12407, 17433)]