256792432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:666

約数の個数: 80

約数和(自身を含む): 560332192

約数和(自身を除く): 303539760

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 61, 74, 104, 122, 148, 208, 244, 296, 481, 488, 547, 592, 793, 962, 976, 1094, 1586, 1924, 2188, 2257, 3172, 3848, 4376, 4514, 6344, 7111, 7696, 8752, 9028, 12688, 14222, 18056, 20239, 28444, 29341, 33367, 36112, 40478, 56888, 58682, 66734, 80956, 113776, 117364, 133468, 161912, 234728, 263107, 266936, 323824, 433771, 469456, 526214, 533872, 867542, 1052428, 1234579, 1735084, 2104856, 2469158, 3470168, 4209712, 4938316, 6940336, 9876632, 16049527, 19753264, 32099054, 64198108, 128396216, 256792432]

約数ペア:

[(1, 256792432), (2, 128396216), (4, 64198108), (8, 32099054), (13, 19753264), (16, 16049527), (26, 9876632), (37, 6940336), (52, 4938316), (61, 4209712), (74, 3470168), (104, 2469158), (122, 2104856), (148, 1735084), (208, 1234579), (244, 1052428), (296, 867542), (481, 533872), (488, 526214), (547, 469456), (592, 433771), (793, 323824), (962, 266936), (976, 263107), (1094, 234728), (1586, 161912), (1924, 133468), (2188, 117364), (2257, 113776), (3172, 80956), (3848, 66734), (4376, 58682), (4514, 56888), (6344, 40478), (7111, 36112), (7696, 33367), (8752, 29341), (9028, 28444), (12688, 20239), (14222, 18056)]