21000000168

素因数分解:

$2^3\times 3^3\times 7^2\times {\mathrm{109}}^2\times {\mathrm{167}}^1$

素因数の和:414

約数の個数: 288

約数和(自身を含む): 68895489600

約数和(自身を除く): 47895489432

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 49, 54, 56, 63, 72, 84, 98, 108, 109, 126, 147, 167, 168, 189, 196, 216, 218, 252, 294, 327, 334, 378, 392, 436, 441, 501, 504, 588, 654, 668, 756, 763, 872, 882, 981, 1002, 1169, 1176, 1308, 1323, 1336, 1503, 1512, 1526, 1764, 1962, 2004, 2289, 2338, 2616, 2646, 2943, 3006, 3052, 3507, 3528, 3924, 4008, 4509, 4578, 4676, 5292, 5341, 5886, 6012, 6104, 6867, 7014, 7848, 8183, 9018, 9156, 9352, 10521, 10584, 10682, 11772, 11881, 12024, 13734, 14028, 16023, 16366, 18036, 18203, 18312, 20601, 21042, 21364, 23544, 23762, 24549, 27468, 28056, 31563, 32046, 32732, 35643, 36072, 36406, 41202, 42084, 42728, 47524, 48069, 49098, 54609, 54936, 63126, 64092, 65464, 71286, 72812, 73647, 82404, 83167, 84168, 95048, 96138, 98196, 106929, 109218, 126252, 127421, 128184, 142572, 144207, 145624, 147294, 163827, 164808, 166334, 192276, 196392, 213858, 218436, 220941, 249501, 252504, 254842, 285144, 288414, 294588, 320787, 327654, 332668, 382263, 384552, 427716, 436872, 441882, 491481, 499002, 509684, 576828, 582169, 589176, 641574, 655308, 665336, 748503, 764526, 855432, 883764, 891947, 982962, 998004, 1019368, 1146789, 1153656, 1164338, 1283148, 1310616, 1497006, 1529052, 1746507, 1767528, 1783894, 1965924, 1984127, 1996008, 2245509, 2293578, 2328676, 2566296, 2675841, 2994012, 3058104, 3440367, 3493014, 3567788, 3931848, 3968254, 4491018, 4587156, 4657352, 5239521, 5351682, 5952381, 5988024, 6880734, 6986028, 7135576, 7936508, 8027523, 8982036, 9174312, 10479042, 10703364, 11904762, 13761468, 13888889, 13972056, 15718563, 15873016, 16055046, 17857143, 17964072, 20958084, 21406728, 23809524, 24082569, 27522936, 27777778, 31437126, 32110092, 35714286, 41666667, 41916168, 47619048, 48165138, 53571429, 55555556, 62874252, 64220184, 71428572, 83333334, 96330276, 97222223, 107142858, 111111112, 125000001, 125748504, 142857144, 166666668, 192660552, 194444446, 214285716, 250000002, 291666669, 333333336, 375000003, 388888892, 428571432, 500000004, 583333338, 750000006, 777777784, 875000007, 1000000008, 1166666676, 1500000012, 1750000014, 2333333352, 2625000021, 3000000024, 3500000028, 5250000042, 7000000056, 10500000084, 21000000168]

約数ペア:

[(1, 21000000168), (2, 10500000084), (3, 7000000056), (4, 5250000042), (6, 3500000028), (7, 3000000024), (8, 2625000021), (9, 2333333352), (12, 1750000014), (14, 1500000012), (18, 1166666676), (21, 1000000008), (24, 875000007), (27, 777777784), (28, 750000006), (36, 583333338), (42, 500000004), (49, 428571432), (54, 388888892), (56, 375000003), (63, 333333336), (72, 291666669), (84, 250000002), (98, 214285716), (108, 194444446), (109, 192660552), (126, 166666668), (147, 142857144), (167, 125748504), (168, 125000001), (189, 111111112), (196, 107142858), (216, 97222223), (218, 96330276), (252, 83333334), (294, 71428572), (327, 64220184), (334, 62874252), (378, 55555556), (392, 53571429), (436, 48165138), (441, 47619048), (501, 41916168), (504, 41666667), (588, 35714286), (654, 32110092), (668, 31437126), (756, 27777778), (763, 27522936), (872, 24082569), (882, 23809524), (981, 21406728), (1002, 20958084), (1169, 17964072), (1176, 17857143), (1308, 16055046), (1323, 15873016), (1336, 15718563), (1503, 13972056), (1512, 13888889), (1526, 13761468), (1764, 11904762), (1962, 10703364), (2004, 10479042), (2289, 9174312), (2338, 8982036), (2616, 8027523), (2646, 7936508), (2943, 7135576), (3006, 6986028), (3052, 6880734), (3507, 5988024), (3528, 5952381), (3924, 5351682), (4008, 5239521), (4509, 4657352), (4578, 4587156), (4676, 4491018), (5292, 3968254), (5341, 3931848), (5886, 3567788), (6012, 3493014), (6104, 3440367), (6867, 3058104), (7014, 2994012), (7848, 2675841), (8183, 2566296), (9018, 2328676), (9156, 2293578), (9352, 2245509), (10521, 1996008), (10584, 1984127), (10682, 1965924), (11772, 1783894), (11881, 1767528), (12024, 1746507), (13734, 1529052), (14028, 1497006), (16023, 1310616), (16366, 1283148), (18036, 1164338), (18203, 1153656), (18312, 1146789), (20601, 1019368), (21042, 998004), (21364, 982962), (23544, 891947), (23762, 883764), (24549, 855432), (27468, 764526), (28056, 748503), (31563, 665336), (32046, 655308), (32732, 641574), (35643, 589176), (36072, 582169), (36406, 576828), (41202, 509684), (42084, 499002), (42728, 491481), (47524, 441882), (48069, 436872), (49098, 427716), (54609, 384552), (54936, 382263), (63126, 332668), (64092, 327654), (65464, 320787), (71286, 294588), (72812, 288414), (73647, 285144), (82404, 254842), (83167, 252504), (84168, 249501), (95048, 220941), (96138, 218436), (98196, 213858), (106929, 196392), (109218, 192276), (126252, 166334), (127421, 164808), (128184, 163827), (142572, 147294), (144207, 145624)]