81812187

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{283}}^1$

素因数の和:421

約数の個数: 40

約数和(自身を含む): 127009344

約数和(自身を除く): 45197157

約数列:

[1, 3, 9, 27, 43, 81, 83, 129, 249, 283, 387, 747, 849, 1161, 2241, 2547, 3483, 3569, 6723, 7641, 10707, 12169, 22923, 23489, 32121, 36507, 70467, 96363, 109521, 211401, 289089, 328563, 634203, 985689, 1010027, 1902609, 3030081, 9090243, 27270729, 81812187]

約数ペア:

[(1, 81812187), (3, 27270729), (9, 9090243), (27, 3030081), (43, 1902609), (81, 1010027), (83, 985689), (129, 634203), (249, 328563), (283, 289089), (387, 211401), (747, 109521), (849, 96363), (1161, 70467), (2241, 36507), (2547, 32121), (3483, 23489), (3569, 22923), (6723, 12169), (7641, 10707)]