280947368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 580608000

約数和(自身を除く): 299660632

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 127, 178, 239, 254, 356, 478, 508, 712, 956, 1016, 1157, 1651, 1912, 2314, 3107, 3302, 4628, 6214, 6604, 9256, 11303, 12428, 13208, 21271, 22606, 24856, 30353, 42542, 45212, 60706, 85084, 90424, 121412, 146939, 170168, 242824, 276523, 293878, 394589, 553046, 587756, 789178, 1106092, 1175512, 1578356, 2212184, 2701417, 3156712, 5402834, 10805668, 21611336, 35118421, 70236842, 140473684, 280947368]

約数ペア:

[(1, 280947368), (2, 140473684), (4, 70236842), (8, 35118421), (13, 21611336), (26, 10805668), (52, 5402834), (89, 3156712), (104, 2701417), (127, 2212184), (178, 1578356), (239, 1175512), (254, 1106092), (356, 789178), (478, 587756), (508, 553046), (712, 394589), (956, 293878), (1016, 276523), (1157, 242824), (1651, 170168), (1912, 146939), (2314, 121412), (3107, 90424), (3302, 85084), (4628, 60706), (6214, 45212), (6604, 42542), (9256, 30353), (11303, 24856), (12428, 22606), (13208, 21271)]