399661920

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1279}}^1$

素因数の和:1338

約数の個数: 288

約数和(自身を含む): 1610219520

約数和(自身を除く): 1210557600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 32, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 96, 105, 112, 120, 124, 126, 140, 144, 155, 160, 168, 180, 186, 210, 217, 224, 240, 248, 252, 279, 280, 288, 310, 315, 336, 360, 372, 420, 434, 465, 480, 496, 504, 558, 560, 620, 630, 651, 672, 720, 744, 840, 868, 930, 992, 1008, 1085, 1116, 1120, 1240, 1260, 1279, 1302, 1395, 1440, 1488, 1680, 1736, 1860, 1953, 2016, 2170, 2232, 2480, 2520, 2558, 2604, 2790, 2976, 3255, 3360, 3472, 3720, 3837, 3906, 4340, 4464, 4960, 5040, 5116, 5208, 5580, 6395, 6510, 6944, 7440, 7674, 7812, 8680, 8928, 8953, 9765, 10080, 10232, 10416, 11160, 11511, 12790, 13020, 14880, 15348, 15624, 17360, 17906, 19185, 19530, 20464, 20832, 22320, 23022, 25580, 26040, 26859, 30696, 31248, 34720, 35812, 38370, 39060, 39649, 40928, 44640, 44765, 46044, 51160, 52080, 53718, 57555, 61392, 62496, 71624, 76740, 78120, 79298, 80577, 89530, 92088, 102320, 104160, 107436, 115110, 118947, 122784, 134295, 143248, 153480, 156240, 158596, 161154, 179060, 184176, 198245, 204640, 214872, 230220, 237894, 268590, 277543, 286496, 306960, 312480, 317192, 322308, 356841, 358120, 368352, 396490, 402885, 429744, 460440, 475788, 537180, 555086, 594735, 613920, 634384, 644616, 713682, 716240, 792980, 805770, 832629, 859488, 920880, 951576, 1074360, 1110172, 1189470, 1268768, 1289232, 1387715, 1427364, 1432480, 1585960, 1611540, 1665258, 1784205, 1841760, 1903152, 2148720, 2220344, 2378940, 2497887, 2578464, 2775430, 2854728, 3171920, 3223080, 3330516, 3568410, 3806304, 4163145, 4297440, 4440688, 4757880, 4995774, 5550860, 5709456, 6343840, 6446160, 6661032, 7136820, 8326290, 8881376, 9515760, 9991548, 11101720, 11418912, 12489435, 12892320, 13322064, 14273640, 16652580, 19031520, 19983096, 22203440, 24978870, 26644128, 28547280, 33305160, 39966192, 44406880, 49957740, 57094560, 66610320, 79932384, 99915480, 133220640, 199830960, 399661920]

約数ペア:

[(1, 399661920), (2, 199830960), (3, 133220640), (4, 99915480), (5, 79932384), (6, 66610320), (7, 57094560), (8, 49957740), (9, 44406880), (10, 39966192), (12, 33305160), (14, 28547280), (15, 26644128), (16, 24978870), (18, 22203440), (20, 19983096), (21, 19031520), (24, 16652580), (28, 14273640), (30, 13322064), (31, 12892320), (32, 12489435), (35, 11418912), (36, 11101720), (40, 9991548), (42, 9515760), (45, 8881376), (48, 8326290), (56, 7136820), (60, 6661032), (62, 6446160), (63, 6343840), (70, 5709456), (72, 5550860), (80, 4995774), (84, 4757880), (90, 4440688), (93, 4297440), (96, 4163145), (105, 3806304), (112, 3568410), (120, 3330516), (124, 3223080), (126, 3171920), (140, 2854728), (144, 2775430), (155, 2578464), (160, 2497887), (168, 2378940), (180, 2220344), (186, 2148720), (210, 1903152), (217, 1841760), (224, 1784205), (240, 1665258), (248, 1611540), (252, 1585960), (279, 1432480), (280, 1427364), (288, 1387715), (310, 1289232), (315, 1268768), (336, 1189470), (360, 1110172), (372, 1074360), (420, 951576), (434, 920880), (465, 859488), (480, 832629), (496, 805770), (504, 792980), (558, 716240), (560, 713682), (620, 644616), (630, 634384), (651, 613920), (672, 594735), (720, 555086), (744, 537180), (840, 475788), (868, 460440), (930, 429744), (992, 402885), (1008, 396490), (1085, 368352), (1116, 358120), (1120, 356841), (1240, 322308), (1260, 317192), (1279, 312480), (1302, 306960), (1395, 286496), (1440, 277543), (1488, 268590), (1680, 237894), (1736, 230220), (1860, 214872), (1953, 204640), (2016, 198245), (2170, 184176), (2232, 179060), (2480, 161154), (2520, 158596), (2558, 156240), (2604, 153480), (2790, 143248), (2976, 134295), (3255, 122784), (3360, 118947), (3472, 115110), (3720, 107436), (3837, 104160), (3906, 102320), (4340, 92088), (4464, 89530), (4960, 80577), (5040, 79298), (5116, 78120), (5208, 76740), (5580, 71624), (6395, 62496), (6510, 61392), (6944, 57555), (7440, 53718), (7674, 52080), (7812, 51160), (8680, 46044), (8928, 44765), (8953, 44640), (9765, 40928), (10080, 39649), (10232, 39060), (10416, 38370), (11160, 35812), (11511, 34720), (12790, 31248), (13020, 30696), (14880, 26859), (15348, 26040), (15624, 25580), (17360, 23022), (17906, 22320), (19185, 20832), (19530, 20464)]