257817560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:226

約数の個数: 256

約数和(自身を含む): 801239040

約数和(自身を除く): 543421480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 47, 52, 55, 56, 65, 70, 77, 88, 91, 94, 104, 110, 130, 137, 140, 143, 154, 182, 188, 220, 235, 260, 274, 280, 286, 308, 329, 364, 376, 385, 440, 455, 470, 517, 520, 548, 572, 611, 616, 658, 685, 715, 728, 770, 910, 940, 959, 1001, 1034, 1096, 1144, 1222, 1316, 1370, 1430, 1507, 1540, 1645, 1781, 1820, 1880, 1918, 2002, 2068, 2444, 2585, 2632, 2740, 2860, 3014, 3055, 3080, 3290, 3562, 3619, 3640, 3836, 4004, 4136, 4277, 4795, 4888, 5005, 5170, 5480, 5720, 6028, 6110, 6439, 6580, 6721, 7124, 7238, 7535, 7672, 8008, 8554, 8905, 9590, 10010, 10340, 10549, 12056, 12220, 12467, 12878, 13160, 13442, 14248, 14476, 15070, 17108, 17810, 18095, 19180, 19591, 20020, 20680, 21098, 21385, 24440, 24934, 25756, 26884, 28952, 30140, 32195, 33605, 34216, 35620, 36190, 38360, 39182, 40040, 42196, 42770, 45073, 47047, 49868, 51512, 52745, 53768, 60280, 62335, 64390, 67210, 70829, 71240, 72380, 78364, 83707, 84392, 85540, 90146, 94094, 97955, 99736, 105490, 124670, 128780, 134420, 137137, 141658, 144760, 156728, 167414, 171080, 180292, 188188, 195910, 210980, 225365, 235235, 249340, 257560, 268840, 274274, 283316, 334828, 354145, 360584, 376376, 391820, 418535, 421960, 450730, 470470, 495803, 498680, 548548, 566632, 585949, 669656, 685685, 708290, 783640, 837070, 901460, 920777, 940940, 991606, 1097096, 1171898, 1371370, 1416580, 1674140, 1802920, 1841554, 1881880, 1983212, 2343796, 2479015, 2742740, 2833160, 2929745, 3348280, 3683108, 3966424, 4603885, 4687592, 4958030, 5485480, 5859490, 6445439, 7366216, 9207770, 9916060, 11718980, 12890878, 18415540, 19832120, 23437960, 25781756, 32227195, 36831080, 51563512, 64454390, 128908780, 257817560]

約数ペア:

[(1, 257817560), (2, 128908780), (4, 64454390), (5, 51563512), (7, 36831080), (8, 32227195), (10, 25781756), (11, 23437960), (13, 19832120), (14, 18415540), (20, 12890878), (22, 11718980), (26, 9916060), (28, 9207770), (35, 7366216), (40, 6445439), (44, 5859490), (47, 5485480), (52, 4958030), (55, 4687592), (56, 4603885), (65, 3966424), (70, 3683108), (77, 3348280), (88, 2929745), (91, 2833160), (94, 2742740), (104, 2479015), (110, 2343796), (130, 1983212), (137, 1881880), (140, 1841554), (143, 1802920), (154, 1674140), (182, 1416580), (188, 1371370), (220, 1171898), (235, 1097096), (260, 991606), (274, 940940), (280, 920777), (286, 901460), (308, 837070), (329, 783640), (364, 708290), (376, 685685), (385, 669656), (440, 585949), (455, 566632), (470, 548548), (517, 498680), (520, 495803), (548, 470470), (572, 450730), (611, 421960), (616, 418535), (658, 391820), (685, 376376), (715, 360584), (728, 354145), (770, 334828), (910, 283316), (940, 274274), (959, 268840), (1001, 257560), (1034, 249340), (1096, 235235), (1144, 225365), (1222, 210980), (1316, 195910), (1370, 188188), (1430, 180292), (1507, 171080), (1540, 167414), (1645, 156728), (1781, 144760), (1820, 141658), (1880, 137137), (1918, 134420), (2002, 128780), (2068, 124670), (2444, 105490), (2585, 99736), (2632, 97955), (2740, 94094), (2860, 90146), (3014, 85540), (3055, 84392), (3080, 83707), (3290, 78364), (3562, 72380), (3619, 71240), (3640, 70829), (3836, 67210), (4004, 64390), (4136, 62335), (4277, 60280), (4795, 53768), (4888, 52745), (5005, 51512), (5170, 49868), (5480, 47047), (5720, 45073), (6028, 42770), (6110, 42196), (6439, 40040), (6580, 39182), (6721, 38360), (7124, 36190), (7238, 35620), (7535, 34216), (7672, 33605), (8008, 32195), (8554, 30140), (8905, 28952), (9590, 26884), (10010, 25756), (10340, 24934), (10549, 24440), (12056, 21385), (12220, 21098), (12467, 20680), (12878, 20020), (13160, 19591), (13442, 19180), (14248, 18095), (14476, 17810), (15070, 17108)]