256371984

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 240

約数和(自身を含む): 846802944

約数和(自身を除く): 590430960

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 23, 24, 31, 33, 36, 44, 46, 48, 62, 66, 69, 72, 88, 92, 93, 99, 124, 132, 138, 144, 176, 184, 186, 198, 207, 227, 248, 253, 264, 276, 279, 341, 368, 372, 396, 414, 454, 496, 506, 528, 552, 558, 681, 682, 713, 744, 759, 792, 828, 908, 1012, 1023, 1104, 1116, 1362, 1364, 1426, 1488, 1518, 1584, 1656, 1816, 2024, 2043, 2046, 2139, 2232, 2277, 2497, 2724, 2728, 2852, 3036, 3069, 3312, 3632, 4048, 4086, 4092, 4278, 4464, 4554, 4994, 5221, 5448, 5456, 5704, 6072, 6138, 6417, 7037, 7491, 7843, 8172, 8184, 8556, 9108, 9988, 10442, 10896, 11408, 12144, 12276, 12834, 14074, 14982, 15663, 15686, 16344, 16368, 17112, 18216, 19976, 20884, 21111, 22473, 23529, 24552, 25668, 28148, 29964, 31326, 31372, 32688, 34224, 36432, 39952, 41768, 42222, 44946, 46989, 47058, 49104, 51336, 56296, 57431, 59928, 62652, 62744, 63333, 70587, 77407, 83536, 84444, 89892, 93978, 94116, 102672, 112592, 114862, 119856, 125304, 125488, 126666, 141174, 154814, 161851, 168888, 172293, 179784, 187956, 188232, 229724, 232221, 250608, 253332, 282348, 309628, 323702, 337776, 344586, 359568, 375912, 376464, 459448, 464442, 485553, 506664, 516879, 564696, 619256, 647404, 689172, 696663, 751824, 918896, 928884, 971106, 1013328, 1033758, 1129392, 1238512, 1294808, 1378344, 1393326, 1456659, 1780361, 1857768, 1942212, 2067516, 2589616, 2756688, 2786652, 2913318, 3560722, 3715536, 3884424, 4135032, 5341083, 5573304, 5826636, 7121444, 7768848, 8270064, 10682166, 11146608, 11653272, 14242888, 16023249, 21364332, 23306544, 28485776, 32046498, 42728664, 64092996, 85457328, 128185992, 256371984]

約数ペア:

[(1, 256371984), (2, 128185992), (3, 85457328), (4, 64092996), (6, 42728664), (8, 32046498), (9, 28485776), (11, 23306544), (12, 21364332), (16, 16023249), (18, 14242888), (22, 11653272), (23, 11146608), (24, 10682166), (31, 8270064), (33, 7768848), (36, 7121444), (44, 5826636), (46, 5573304), (48, 5341083), (62, 4135032), (66, 3884424), (69, 3715536), (72, 3560722), (88, 2913318), (92, 2786652), (93, 2756688), (99, 2589616), (124, 2067516), (132, 1942212), (138, 1857768), (144, 1780361), (176, 1456659), (184, 1393326), (186, 1378344), (198, 1294808), (207, 1238512), (227, 1129392), (248, 1033758), (253, 1013328), (264, 971106), (276, 928884), (279, 918896), (341, 751824), (368, 696663), (372, 689172), (396, 647404), (414, 619256), (454, 564696), (496, 516879), (506, 506664), (528, 485553), (552, 464442), (558, 459448), (681, 376464), (682, 375912), (713, 359568), (744, 344586), (759, 337776), (792, 323702), (828, 309628), (908, 282348), (1012, 253332), (1023, 250608), (1104, 232221), (1116, 229724), (1362, 188232), (1364, 187956), (1426, 179784), (1488, 172293), (1518, 168888), (1584, 161851), (1656, 154814), (1816, 141174), (2024, 126666), (2043, 125488), (2046, 125304), (2139, 119856), (2232, 114862), (2277, 112592), (2497, 102672), (2724, 94116), (2728, 93978), (2852, 89892), (3036, 84444), (3069, 83536), (3312, 77407), (3632, 70587), (4048, 63333), (4086, 62744), (4092, 62652), (4278, 59928), (4464, 57431), (4554, 56296), (4994, 51336), (5221, 49104), (5448, 47058), (5456, 46989), (5704, 44946), (6072, 42222), (6138, 41768), (6417, 39952), (7037, 36432), (7491, 34224), (7843, 32688), (8172, 31372), (8184, 31326), (8556, 29964), (9108, 28148), (9988, 25668), (10442, 24552), (10896, 23529), (11408, 22473), (12144, 21111), (12276, 20884), (12834, 19976), (14074, 18216), (14982, 17112), (15663, 16368), (15686, 16344)]