256305280

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{743}}^1$

素因数の和:787

約数の個数: 192

約数和(自身を含む): 778610880

約数和(自身を除く): 522305600

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, 280, 308, 320, 352, 385, 392, 440, 448, 490, 539, 560, 616, 640, 704, 743, 770, 784, 880, 896, 980, 1078, 1120, 1232, 1408, 1486, 1540, 1568, 1760, 1960, 2156, 2240, 2464, 2695, 2972, 3080, 3136, 3520, 3715, 3920, 4312, 4480, 4928, 5201, 5390, 5944, 6160, 6272, 7040, 7430, 7840, 8173, 8624, 9856, 10402, 10780, 11888, 12320, 14860, 15680, 16346, 17248, 20804, 21560, 23776, 24640, 26005, 29720, 31360, 32692, 34496, 36407, 40865, 41608, 43120, 47552, 49280, 52010, 57211, 59440, 65384, 68992, 72814, 81730, 83216, 86240, 95104, 104020, 114422, 118880, 130768, 145628, 163460, 166432, 172480, 182035, 208040, 228844, 237760, 261536, 286055, 291256, 326920, 332864, 344960, 364070, 400477, 416080, 457688, 475520, 523072, 572110, 582512, 653840, 665728, 728140, 800954, 832160, 915376, 1046144, 1144220, 1165024, 1307680, 1456280, 1601908, 1664320, 1830752, 2002385, 2288440, 2330048, 2615360, 2912560, 3203816, 3328640, 3661504, 4004770, 4576880, 4660096, 5230720, 5825120, 6407632, 7323008, 8009540, 9153760, 11650240, 12815264, 16019080, 18307520, 23300480, 25630528, 32038160, 36615040, 51261056, 64076320, 128152640, 256305280]

約数ペア:

[(1, 256305280), (2, 128152640), (4, 64076320), (5, 51261056), (7, 36615040), (8, 32038160), (10, 25630528), (11, 23300480), (14, 18307520), (16, 16019080), (20, 12815264), (22, 11650240), (28, 9153760), (32, 8009540), (35, 7323008), (40, 6407632), (44, 5825120), (49, 5230720), (55, 4660096), (56, 4576880), (64, 4004770), (70, 3661504), (77, 3328640), (80, 3203816), (88, 2912560), (98, 2615360), (110, 2330048), (112, 2288440), (128, 2002385), (140, 1830752), (154, 1664320), (160, 1601908), (176, 1456280), (196, 1307680), (220, 1165024), (224, 1144220), (245, 1046144), (280, 915376), (308, 832160), (320, 800954), (352, 728140), (385, 665728), (392, 653840), (440, 582512), (448, 572110), (490, 523072), (539, 475520), (560, 457688), (616, 416080), (640, 400477), (704, 364070), (743, 344960), (770, 332864), (784, 326920), (880, 291256), (896, 286055), (980, 261536), (1078, 237760), (1120, 228844), (1232, 208040), (1408, 182035), (1486, 172480), (1540, 166432), (1568, 163460), (1760, 145628), (1960, 130768), (2156, 118880), (2240, 114422), (2464, 104020), (2695, 95104), (2972, 86240), (3080, 83216), (3136, 81730), (3520, 72814), (3715, 68992), (3920, 65384), (4312, 59440), (4480, 57211), (4928, 52010), (5201, 49280), (5390, 47552), (5944, 43120), (6160, 41608), (6272, 40865), (7040, 36407), (7430, 34496), (7840, 32692), (8173, 31360), (8624, 29720), (9856, 26005), (10402, 24640), (10780, 23776), (11888, 21560), (12320, 20804), (14860, 17248), (15680, 16346)]