19989585920

素因数分解:

$2^{13}\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4561}}^1$

素因数の和:4699

約数の個数: 112

約数和(自身を含む): 48431031408

約数和(自身を除く): 28441445488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 256, 320, 428, 512, 535, 640, 856, 1024, 1070, 1280, 1712, 2048, 2140, 2560, 3424, 4096, 4280, 4561, 5120, 6848, 8192, 8560, 9122, 10240, 13696, 17120, 18244, 20480, 22805, 27392, 34240, 36488, 40960, 45610, 54784, 68480, 72976, 91220, 109568, 136960, 145952, 182440, 219136, 273920, 291904, 364880, 438272, 488027, 547840, 583808, 729760, 876544, 976054, 1095680, 1167616, 1459520, 1952108, 2191360, 2335232, 2440135, 2919040, 3904216, 4382720, 4670464, 4880270, 5838080, 7808432, 9340928, 9760540, 11676160, 15616864, 18681856, 19521080, 23352320, 31233728, 37363712, 39042160, 46704640, 62467456, 78084320, 93409280, 124934912, 156168640, 186818560, 249869824, 312337280, 499739648, 624674560, 999479296, 1249349120, 1998958592, 2498698240, 3997917184, 4997396480, 9994792960, 19989585920]

約数ペア:

[(1, 19989585920), (2, 9994792960), (4, 4997396480), (5, 3997917184), (8, 2498698240), (10, 1998958592), (16, 1249349120), (20, 999479296), (32, 624674560), (40, 499739648), (64, 312337280), (80, 249869824), (107, 186818560), (128, 156168640), (160, 124934912), (214, 93409280), (256, 78084320), (320, 62467456), (428, 46704640), (512, 39042160), (535, 37363712), (640, 31233728), (856, 23352320), (1024, 19521080), (1070, 18681856), (1280, 15616864), (1712, 11676160), (2048, 9760540), (2140, 9340928), (2560, 7808432), (3424, 5838080), (4096, 4880270), (4280, 4670464), (4561, 4382720), (5120, 3904216), (6848, 2919040), (8192, 2440135), (8560, 2335232), (9122, 2191360), (10240, 1952108), (13696, 1459520), (17120, 1167616), (18244, 1095680), (20480, 976054), (22805, 876544), (27392, 729760), (34240, 583808), (36488, 547840), (40960, 488027), (45610, 438272), (54784, 364880), (68480, 291904), (72976, 273920), (91220, 219136), (109568, 182440), (136960, 145952)]