261479680

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:425

約数の個数: 216

約数和(自身を含む): 796914720

約数和(自身を除く): 535435040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 64, 70, 77, 80, 88, 98, 110, 112, 128, 140, 154, 160, 176, 196, 220, 224, 245, 256, 280, 308, 320, 352, 379, 385, 392, 440, 448, 490, 539, 560, 616, 640, 704, 758, 770, 784, 880, 896, 980, 1078, 1120, 1232, 1280, 1408, 1516, 1540, 1568, 1760, 1792, 1895, 1960, 2156, 2240, 2464, 2653, 2695, 2816, 3032, 3080, 3136, 3520, 3790, 3920, 4169, 4312, 4480, 4928, 5306, 5390, 6064, 6160, 6272, 7040, 7580, 7840, 8338, 8624, 8960, 9856, 10612, 10780, 12128, 12320, 12544, 13265, 14080, 15160, 15680, 16676, 17248, 18571, 19712, 20845, 21224, 21560, 24256, 24640, 26530, 29183, 30320, 31360, 33352, 34496, 37142, 41690, 42448, 43120, 48512, 49280, 53060, 58366, 60640, 62720, 66704, 68992, 74284, 83380, 84896, 86240, 92855, 97024, 98560, 106120, 116732, 121280, 133408, 137984, 145915, 148568, 166760, 169792, 172480, 185710, 204281, 212240, 233464, 242560, 266816, 291830, 297136, 333520, 339584, 344960, 371420, 408562, 424480, 466928, 485120, 533632, 583660, 594272, 667040, 679168, 689920, 742840, 817124, 848960, 933856, 1021405, 1067264, 1167320, 1188544, 1334080, 1485680, 1634248, 1697920, 1867712, 2042810, 2334640, 2377088, 2668160, 2971360, 3268496, 3395840, 3735424, 4085620, 4669280, 4754176, 5336320, 5942720, 6536992, 7470848, 8171240, 9338560, 11885440, 13073984, 16342480, 18677120, 23770880, 26147968, 32684960, 37354240, 52295936, 65369920, 130739840, 261479680]

約数ペア:

[(1, 261479680), (2, 130739840), (4, 65369920), (5, 52295936), (7, 37354240), (8, 32684960), (10, 26147968), (11, 23770880), (14, 18677120), (16, 16342480), (20, 13073984), (22, 11885440), (28, 9338560), (32, 8171240), (35, 7470848), (40, 6536992), (44, 5942720), (49, 5336320), (55, 4754176), (56, 4669280), (64, 4085620), (70, 3735424), (77, 3395840), (80, 3268496), (88, 2971360), (98, 2668160), (110, 2377088), (112, 2334640), (128, 2042810), (140, 1867712), (154, 1697920), (160, 1634248), (176, 1485680), (196, 1334080), (220, 1188544), (224, 1167320), (245, 1067264), (256, 1021405), (280, 933856), (308, 848960), (320, 817124), (352, 742840), (379, 689920), (385, 679168), (392, 667040), (440, 594272), (448, 583660), (490, 533632), (539, 485120), (560, 466928), (616, 424480), (640, 408562), (704, 371420), (758, 344960), (770, 339584), (784, 333520), (880, 297136), (896, 291830), (980, 266816), (1078, 242560), (1120, 233464), (1232, 212240), (1280, 204281), (1408, 185710), (1516, 172480), (1540, 169792), (1568, 166760), (1760, 148568), (1792, 145915), (1895, 137984), (1960, 133408), (2156, 121280), (2240, 116732), (2464, 106120), (2653, 98560), (2695, 97024), (2816, 92855), (3032, 86240), (3080, 84896), (3136, 83380), (3520, 74284), (3790, 68992), (3920, 66704), (4169, 62720), (4312, 60640), (4480, 58366), (4928, 53060), (5306, 49280), (5390, 48512), (6064, 43120), (6160, 42448), (6272, 41690), (7040, 37142), (7580, 34496), (7840, 33352), (8338, 31360), (8624, 30320), (8960, 29183), (9856, 26530), (10612, 24640), (10780, 24256), (12128, 21560), (12320, 21224), (12544, 20845), (13265, 19712), (14080, 18571), (15160, 17248), (15680, 16676)]