257042240

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 252

約数和(自身を含む): 778945356

約数和(自身を除く): 521903116

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 97, 98, 104, 112, 130, 140, 160, 169, 182, 194, 196, 208, 224, 245, 260, 280, 320, 338, 364, 388, 392, 416, 448, 455, 485, 490, 520, 560, 637, 676, 679, 728, 776, 784, 832, 845, 910, 970, 980, 1040, 1120, 1183, 1261, 1274, 1352, 1358, 1456, 1552, 1568, 1690, 1820, 1940, 1960, 2080, 2240, 2366, 2522, 2548, 2704, 2716, 2912, 3104, 3136, 3185, 3380, 3395, 3640, 3880, 3920, 4160, 4732, 4753, 5044, 5096, 5408, 5432, 5824, 5915, 6208, 6305, 6370, 6760, 6790, 7280, 7760, 7840, 8281, 8827, 9464, 9506, 10088, 10192, 10816, 10864, 11830, 12610, 12740, 13520, 13580, 14560, 15520, 15680, 16393, 16562, 17654, 18928, 19012, 20176, 20384, 21728, 23660, 23765, 25220, 25480, 27040, 27160, 29120, 31040, 32786, 33124, 35308, 37856, 38024, 40352, 40768, 41405, 43456, 44135, 47320, 47530, 50440, 50960, 54080, 54320, 61789, 65572, 66248, 70616, 75712, 76048, 80704, 81965, 82810, 88270, 94640, 95060, 100880, 101920, 108640, 114751, 123578, 131144, 132496, 141232, 152096, 163930, 165620, 176540, 189280, 190120, 201760, 203840, 217280, 229502, 247156, 262288, 264992, 282464, 304192, 308945, 327860, 331240, 353080, 378560, 380240, 403520, 459004, 494312, 524576, 529984, 564928, 573755, 617890, 655720, 662480, 706160, 760480, 803257, 918008, 988624, 1049152, 1147510, 1235780, 1311440, 1324960, 1412320, 1520960, 1606514, 1836016, 1977248, 2295020, 2471560, 2622880, 2649920, 2824640, 3213028, 3672032, 3954496, 4016285, 4590040, 4943120, 5245760, 6426056, 7344064, 8032570, 9180080, 9886240, 12852112, 16065140, 18360160, 19772480, 25704224, 32130280, 36720320, 51408448, 64260560, 128521120, 257042240]

約数ペア:

[(1, 257042240), (2, 128521120), (4, 64260560), (5, 51408448), (7, 36720320), (8, 32130280), (10, 25704224), (13, 19772480), (14, 18360160), (16, 16065140), (20, 12852112), (26, 9886240), (28, 9180080), (32, 8032570), (35, 7344064), (40, 6426056), (49, 5245760), (52, 4943120), (56, 4590040), (64, 4016285), (65, 3954496), (70, 3672032), (80, 3213028), (91, 2824640), (97, 2649920), (98, 2622880), (104, 2471560), (112, 2295020), (130, 1977248), (140, 1836016), (160, 1606514), (169, 1520960), (182, 1412320), (194, 1324960), (196, 1311440), (208, 1235780), (224, 1147510), (245, 1049152), (260, 988624), (280, 918008), (320, 803257), (338, 760480), (364, 706160), (388, 662480), (392, 655720), (416, 617890), (448, 573755), (455, 564928), (485, 529984), (490, 524576), (520, 494312), (560, 459004), (637, 403520), (676, 380240), (679, 378560), (728, 353080), (776, 331240), (784, 327860), (832, 308945), (845, 304192), (910, 282464), (970, 264992), (980, 262288), (1040, 247156), (1120, 229502), (1183, 217280), (1261, 203840), (1274, 201760), (1352, 190120), (1358, 189280), (1456, 176540), (1552, 165620), (1568, 163930), (1690, 152096), (1820, 141232), (1940, 132496), (1960, 131144), (2080, 123578), (2240, 114751), (2366, 108640), (2522, 101920), (2548, 100880), (2704, 95060), (2716, 94640), (2912, 88270), (3104, 82810), (3136, 81965), (3185, 80704), (3380, 76048), (3395, 75712), (3640, 70616), (3880, 66248), (3920, 65572), (4160, 61789), (4732, 54320), (4753, 54080), (5044, 50960), (5096, 50440), (5408, 47530), (5432, 47320), (5824, 44135), (5915, 43456), (6208, 41405), (6305, 40768), (6370, 40352), (6760, 38024), (6790, 37856), (7280, 35308), (7760, 33124), (7840, 32786), (8281, 31040), (8827, 29120), (9464, 27160), (9506, 27040), (10088, 25480), (10192, 25220), (10816, 23765), (10864, 23660), (11830, 21728), (12610, 20384), (12740, 20176), (13520, 19012), (13580, 18928), (14560, 17654), (15520, 16562), (15680, 16393)]