131431437

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 216691200

約数和(自身を除く): 85259763

約数列:

[1, 3, 9, 17, 27, 37, 51, 71, 109, 111, 153, 213, 327, 333, 459, 629, 639, 981, 999, 1207, 1853, 1887, 1917, 2627, 2943, 3621, 4033, 5559, 5661, 7739, 7881, 10863, 12099, 16677, 16983, 23217, 23643, 32589, 36297, 44659, 50031, 68561, 69651, 70929, 108891, 131563, 133977, 205683, 208953, 286343, 394689, 401931, 617049, 859029, 1184067, 1205793, 1851147, 2577087, 3552201, 4867831, 7731261, 14603493, 43810479, 131431437]

約数ペア:

[(1, 131431437), (3, 43810479), (9, 14603493), (17, 7731261), (27, 4867831), (37, 3552201), (51, 2577087), (71, 1851147), (109, 1205793), (111, 1184067), (153, 859029), (213, 617049), (327, 401931), (333, 394689), (459, 286343), (629, 208953), (639, 205683), (981, 133977), (999, 131563), (1207, 108891), (1853, 70929), (1887, 69651), (1917, 68561), (2627, 50031), (2943, 44659), (3621, 36297), (4033, 32589), (5559, 23643), (5661, 23217), (7739, 16983), (7881, 16677), (10863, 12099)]