257007870

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:480

約数の個数: 256

約数和(自身を含む): 875059200

約数和(自身を除く): 618051330

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 19, 21, 27, 30, 34, 35, 38, 42, 45, 51, 54, 57, 63, 70, 85, 90, 95, 102, 105, 114, 119, 126, 133, 135, 153, 170, 171, 189, 190, 210, 238, 255, 266, 270, 285, 306, 315, 323, 342, 357, 378, 399, 421, 459, 510, 513, 570, 595, 630, 646, 665, 714, 765, 798, 842, 855, 918, 945, 969, 1026, 1071, 1190, 1197, 1263, 1330, 1530, 1615, 1710, 1785, 1890, 1938, 1995, 2105, 2142, 2261, 2295, 2394, 2526, 2565, 2907, 2947, 3213, 3230, 3570, 3591, 3789, 3990, 4210, 4522, 4590, 4845, 5130, 5355, 5814, 5894, 5985, 6315, 6426, 6783, 7157, 7182, 7578, 7999, 8721, 8841, 9690, 10710, 11305, 11367, 11970, 12630, 13566, 14314, 14535, 14735, 15998, 16065, 17442, 17682, 17955, 18945, 20349, 21471, 22610, 22734, 23997, 26523, 29070, 29470, 32130, 33915, 35785, 35910, 37890, 39995, 40698, 42942, 43605, 44205, 47994, 50099, 53046, 55993, 56835, 61047, 64413, 67830, 71570, 71991, 79569, 79990, 87210, 88410, 100198, 101745, 107355, 111986, 113670, 119985, 122094, 128826, 132615, 135983, 143982, 150297, 159138, 167979, 193239, 203490, 214710, 215973, 239970, 250495, 265230, 271966, 279965, 300594, 305235, 322065, 335958, 359955, 386478, 397845, 407949, 431946, 450891, 500990, 503937, 559930, 610470, 644130, 679915, 719910, 751485, 795690, 815898, 839895, 901782, 951881, 966195, 1007874, 1079865, 1223847, 1352673, 1359830, 1502970, 1511811, 1679790, 1903762, 1932390, 2039745, 2159730, 2254455, 2447694, 2519685, 2705346, 2855643, 3023622, 3671541, 4079490, 4508910, 4759405, 5039370, 5711286, 6119235, 6763365, 7343082, 7559055, 8566929, 9518810, 12238470, 13526730, 14278215, 15118110, 17133858, 18357705, 25700787, 28556430, 36715410, 42834645, 51401574, 85669290, 128503935, 257007870]

約数ペア:

[(1, 257007870), (2, 128503935), (3, 85669290), (5, 51401574), (6, 42834645), (7, 36715410), (9, 28556430), (10, 25700787), (14, 18357705), (15, 17133858), (17, 15118110), (18, 14278215), (19, 13526730), (21, 12238470), (27, 9518810), (30, 8566929), (34, 7559055), (35, 7343082), (38, 6763365), (42, 6119235), (45, 5711286), (51, 5039370), (54, 4759405), (57, 4508910), (63, 4079490), (70, 3671541), (85, 3023622), (90, 2855643), (95, 2705346), (102, 2519685), (105, 2447694), (114, 2254455), (119, 2159730), (126, 2039745), (133, 1932390), (135, 1903762), (153, 1679790), (170, 1511811), (171, 1502970), (189, 1359830), (190, 1352673), (210, 1223847), (238, 1079865), (255, 1007874), (266, 966195), (270, 951881), (285, 901782), (306, 839895), (315, 815898), (323, 795690), (342, 751485), (357, 719910), (378, 679915), (399, 644130), (421, 610470), (459, 559930), (510, 503937), (513, 500990), (570, 450891), (595, 431946), (630, 407949), (646, 397845), (665, 386478), (714, 359955), (765, 335958), (798, 322065), (842, 305235), (855, 300594), (918, 279965), (945, 271966), (969, 265230), (1026, 250495), (1071, 239970), (1190, 215973), (1197, 214710), (1263, 203490), (1330, 193239), (1530, 167979), (1615, 159138), (1710, 150297), (1785, 143982), (1890, 135983), (1938, 132615), (1995, 128826), (2105, 122094), (2142, 119985), (2261, 113670), (2295, 111986), (2394, 107355), (2526, 101745), (2565, 100198), (2907, 88410), (2947, 87210), (3213, 79990), (3230, 79569), (3570, 71991), (3591, 71570), (3789, 67830), (3990, 64413), (4210, 61047), (4522, 56835), (4590, 55993), (4845, 53046), (5130, 50099), (5355, 47994), (5814, 44205), (5894, 43605), (5985, 42942), (6315, 40698), (6426, 39995), (6783, 37890), (7157, 35910), (7182, 35785), (7578, 33915), (7999, 32130), (8721, 29470), (8841, 29070), (9690, 26523), (10710, 23997), (11305, 22734), (11367, 22610), (11970, 21471), (12630, 20349), (13566, 18945), (14314, 17955), (14535, 17682), (14735, 17442), (15998, 16065)]