311815980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:946

約数の個数: 240

約数和(自身を含む): 1155280896

約数和(自身を除く): 843464916

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 60, 62, 63, 70, 81, 84, 90, 93, 105, 108, 124, 126, 135, 140, 155, 162, 180, 186, 189, 210, 217, 252, 270, 279, 310, 315, 324, 372, 378, 405, 420, 434, 465, 540, 558, 567, 620, 630, 651, 756, 810, 837, 868, 887, 930, 945, 1085, 1116, 1134, 1260, 1302, 1395, 1620, 1674, 1774, 1860, 1890, 1953, 2170, 2268, 2511, 2604, 2661, 2790, 2835, 3255, 3348, 3548, 3780, 3906, 4185, 4340, 4435, 5022, 5322, 5580, 5670, 5859, 6209, 6510, 7812, 7983, 8370, 8870, 9765, 10044, 10644, 11340, 11718, 12418, 12555, 13020, 13305, 15966, 16740, 17577, 17740, 18627, 19530, 23436, 23949, 24836, 25110, 26610, 27497, 29295, 31045, 31932, 35154, 37254, 39060, 39915, 47898, 50220, 53220, 54994, 55881, 58590, 62090, 70308, 71847, 74508, 79830, 82491, 87885, 93135, 95796, 109988, 111762, 117180, 119745, 124180, 137485, 143694, 159660, 164982, 167643, 175770, 186270, 192479, 223524, 239490, 247473, 274970, 279405, 287388, 329964, 335286, 351540, 359235, 372540, 384958, 412455, 478980, 494946, 502929, 549940, 558810, 577437, 670572, 718470, 742419, 769916, 824910, 838215, 962395, 989892, 1005858, 1117620, 1154874, 1237365, 1436940, 1484838, 1649820, 1676430, 1732311, 1924790, 2011716, 2227257, 2309748, 2474730, 2514645, 2887185, 2969676, 3352860, 3464622, 3712095, 3849580, 4454514, 4949460, 5029290, 5196933, 5774370, 6929244, 7424190, 8661555, 8909028, 10058580, 10393866, 11136285, 11548740, 14848380, 15590799, 17323110, 20787732, 22272570, 25984665, 31181598, 34646220, 44545140, 51969330, 62363196, 77953995, 103938660, 155907990, 311815980]

約数ペア:

[(1, 311815980), (2, 155907990), (3, 103938660), (4, 77953995), (5, 62363196), (6, 51969330), (7, 44545140), (9, 34646220), (10, 31181598), (12, 25984665), (14, 22272570), (15, 20787732), (18, 17323110), (20, 15590799), (21, 14848380), (27, 11548740), (28, 11136285), (30, 10393866), (31, 10058580), (35, 8909028), (36, 8661555), (42, 7424190), (45, 6929244), (54, 5774370), (60, 5196933), (62, 5029290), (63, 4949460), (70, 4454514), (81, 3849580), (84, 3712095), (90, 3464622), (93, 3352860), (105, 2969676), (108, 2887185), (124, 2514645), (126, 2474730), (135, 2309748), (140, 2227257), (155, 2011716), (162, 1924790), (180, 1732311), (186, 1676430), (189, 1649820), (210, 1484838), (217, 1436940), (252, 1237365), (270, 1154874), (279, 1117620), (310, 1005858), (315, 989892), (324, 962395), (372, 838215), (378, 824910), (405, 769916), (420, 742419), (434, 718470), (465, 670572), (540, 577437), (558, 558810), (567, 549940), (620, 502929), (630, 494946), (651, 478980), (756, 412455), (810, 384958), (837, 372540), (868, 359235), (887, 351540), (930, 335286), (945, 329964), (1085, 287388), (1116, 279405), (1134, 274970), (1260, 247473), (1302, 239490), (1395, 223524), (1620, 192479), (1674, 186270), (1774, 175770), (1860, 167643), (1890, 164982), (1953, 159660), (2170, 143694), (2268, 137485), (2511, 124180), (2604, 119745), (2661, 117180), (2790, 111762), (2835, 109988), (3255, 95796), (3348, 93135), (3548, 87885), (3780, 82491), (3906, 79830), (4185, 74508), (4340, 71847), (4435, 70308), (5022, 62090), (5322, 58590), (5580, 55881), (5670, 54994), (5859, 53220), (6209, 50220), (6510, 47898), (7812, 39915), (7983, 39060), (8370, 37254), (8870, 35154), (9765, 31932), (10044, 31045), (10644, 29295), (11340, 27497), (11718, 26610), (12418, 25110), (12555, 24836), (13020, 23949), (13305, 23436), (15966, 19530), (16740, 18627), (17577, 17740)]