256598160

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:446

約数の個数: 320

約数和(自身を含む): 1013268480

約数和(自身を除く): 756670320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 31, 35, 39, 40, 42, 48, 52, 56, 60, 62, 65, 70, 78, 80, 84, 91, 93, 104, 105, 112, 120, 124, 130, 140, 155, 156, 168, 182, 186, 195, 208, 210, 217, 240, 248, 260, 273, 280, 310, 312, 336, 364, 372, 379, 390, 403, 420, 434, 455, 465, 496, 520, 546, 560, 620, 624, 651, 728, 744, 758, 780, 806, 840, 868, 910, 930, 1040, 1085, 1092, 1137, 1209, 1240, 1302, 1365, 1456, 1488, 1516, 1560, 1612, 1680, 1736, 1820, 1860, 1895, 2015, 2170, 2184, 2274, 2418, 2480, 2604, 2653, 2730, 2821, 3032, 3120, 3224, 3255, 3472, 3640, 3720, 3790, 4030, 4340, 4368, 4548, 4836, 4927, 5208, 5306, 5460, 5642, 5685, 6045, 6064, 6448, 6510, 7280, 7440, 7580, 7959, 8060, 8463, 8680, 9096, 9672, 9854, 10416, 10612, 10920, 11284, 11370, 11749, 12090, 13020, 13265, 14105, 14781, 15160, 15918, 16120, 16926, 17360, 18192, 19344, 19708, 21224, 21840, 22568, 22740, 23498, 24180, 24635, 26040, 26530, 28210, 29562, 30320, 31836, 32240, 33852, 34489, 35247, 39416, 39795, 42315, 42448, 45136, 45480, 46996, 48360, 49270, 52080, 53060, 56420, 58745, 59124, 63672, 67704, 68978, 70494, 73905, 78832, 79590, 82243, 84630, 90960, 93992, 96720, 98540, 103467, 106120, 112840, 117490, 118248, 127344, 135408, 137956, 140988, 147810, 152737, 159180, 164486, 169260, 172445, 176235, 187984, 197080, 206934, 212240, 225680, 234980, 236496, 246729, 275912, 281976, 295620, 305474, 318360, 328972, 338520, 344890, 352470, 394160, 411215, 413868, 458211, 469960, 493458, 517335, 551824, 563952, 591240, 610948, 636720, 657944, 677040, 689780, 704940, 763685, 822430, 827736, 916422, 939920, 986916, 1034670, 1069159, 1182480, 1221896, 1233645, 1315888, 1379560, 1409880, 1527370, 1644860, 1655472, 1832844, 1973832, 2069340, 2138318, 2291055, 2443792, 2467290, 2759120, 2819760, 3054740, 3207477, 3289720, 3665688, 3947664, 4138680, 4276636, 4582110, 4934580, 5345795, 6109480, 6414954, 6579440, 7331376, 8277360, 8553272, 9164220, 9869160, 10691590, 12218960, 12829908, 16037385, 17106544, 18328440, 19738320, 21383180, 25659816, 32074770, 36656880, 42766360, 51319632, 64149540, 85532720, 128299080, 256598160]

約数ペア:

[(1, 256598160), (2, 128299080), (3, 85532720), (4, 64149540), (5, 51319632), (6, 42766360), (7, 36656880), (8, 32074770), (10, 25659816), (12, 21383180), (13, 19738320), (14, 18328440), (15, 17106544), (16, 16037385), (20, 12829908), (21, 12218960), (24, 10691590), (26, 9869160), (28, 9164220), (30, 8553272), (31, 8277360), (35, 7331376), (39, 6579440), (40, 6414954), (42, 6109480), (48, 5345795), (52, 4934580), (56, 4582110), (60, 4276636), (62, 4138680), (65, 3947664), (70, 3665688), (78, 3289720), (80, 3207477), (84, 3054740), (91, 2819760), (93, 2759120), (104, 2467290), (105, 2443792), (112, 2291055), (120, 2138318), (124, 2069340), (130, 1973832), (140, 1832844), (155, 1655472), (156, 1644860), (168, 1527370), (182, 1409880), (186, 1379560), (195, 1315888), (208, 1233645), (210, 1221896), (217, 1182480), (240, 1069159), (248, 1034670), (260, 986916), (273, 939920), (280, 916422), (310, 827736), (312, 822430), (336, 763685), (364, 704940), (372, 689780), (379, 677040), (390, 657944), (403, 636720), (420, 610948), (434, 591240), (455, 563952), (465, 551824), (496, 517335), (520, 493458), (546, 469960), (560, 458211), (620, 413868), (624, 411215), (651, 394160), (728, 352470), (744, 344890), (758, 338520), (780, 328972), (806, 318360), (840, 305474), (868, 295620), (910, 281976), (930, 275912), (1040, 246729), (1085, 236496), (1092, 234980), (1137, 225680), (1209, 212240), (1240, 206934), (1302, 197080), (1365, 187984), (1456, 176235), (1488, 172445), (1516, 169260), (1560, 164486), (1612, 159180), (1680, 152737), (1736, 147810), (1820, 140988), (1860, 137956), (1895, 135408), (2015, 127344), (2170, 118248), (2184, 117490), (2274, 112840), (2418, 106120), (2480, 103467), (2604, 98540), (2653, 96720), (2730, 93992), (2821, 90960), (3032, 84630), (3120, 82243), (3224, 79590), (3255, 78832), (3472, 73905), (3640, 70494), (3720, 68978), (3790, 67704), (4030, 63672), (4340, 59124), (4368, 58745), (4548, 56420), (4836, 53060), (4927, 52080), (5208, 49270), (5306, 48360), (5460, 46996), (5642, 45480), (5685, 45136), (6045, 42448), (6064, 42315), (6448, 39795), (6510, 39416), (7280, 35247), (7440, 34489), (7580, 33852), (7959, 32240), (8060, 31836), (8463, 30320), (8680, 29562), (9096, 28210), (9672, 26530), (9854, 26040), (10416, 24635), (10612, 24180), (10920, 23498), (11284, 22740), (11370, 22568), (11749, 21840), (12090, 21224), (13020, 19708), (13265, 19344), (14105, 18192), (14781, 17360), (15160, 16926), (15918, 16120)]