20425728

素因数分解:

$2^{10}\times 3^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 88

約数和(自身を含む): 55842160

約数和(自身を除く): 35416432

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 61, 64, 96, 109, 122, 128, 183, 192, 218, 244, 256, 327, 366, 384, 436, 488, 512, 654, 732, 768, 872, 976, 1024, 1308, 1464, 1536, 1744, 1952, 2616, 2928, 3072, 3488, 3904, 5232, 5856, 6649, 6976, 7808, 10464, 11712, 13298, 13952, 15616, 19947, 20928, 23424, 26596, 27904, 31232, 39894, 41856, 46848, 53192, 55808, 62464, 79788, 83712, 93696, 106384, 111616, 159576, 167424, 187392, 212768, 319152, 334848, 425536, 638304, 851072, 1276608, 1702144, 2553216, 3404288, 5106432, 6808576, 10212864, 20425728]

約数ペア:

[(1, 20425728), (2, 10212864), (3, 6808576), (4, 5106432), (6, 3404288), (8, 2553216), (12, 1702144), (16, 1276608), (24, 851072), (32, 638304), (48, 425536), (61, 334848), (64, 319152), (96, 212768), (109, 187392), (122, 167424), (128, 159576), (183, 111616), (192, 106384), (218, 93696), (244, 83712), (256, 79788), (327, 62464), (366, 55808), (384, 53192), (436, 46848), (488, 41856), (512, 39894), (654, 31232), (732, 27904), (768, 26596), (872, 23424), (976, 20928), (1024, 19947), (1308, 15616), (1464, 13952), (1536, 13298), (1744, 11712), (1952, 10464), (2616, 7808), (2928, 6976), (3072, 6649), (3488, 5856), (3904, 5232)]