1285665280

素因数分解:

$2^9\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8233}}^1$

素因数の和:8317

約数の個数: 80

約数和(自身を含む): 3133498104

約数和(自身を除く): 1847832824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 512, 610, 640, 976, 1220, 1280, 1952, 2440, 2560, 3904, 4880, 7808, 8233, 9760, 15616, 16466, 19520, 31232, 32932, 39040, 41165, 65864, 78080, 82330, 131728, 156160, 164660, 263456, 329320, 502213, 526912, 658640, 1004426, 1053824, 1317280, 2008852, 2107648, 2511065, 2634560, 4017704, 4215296, 5022130, 5269120, 8035408, 10044260, 10538240, 16070816, 20088520, 21076480, 32141632, 40177040, 64283264, 80354080, 128566528, 160708160, 257133056, 321416320, 642832640, 1285665280]

約数ペア:

[(1, 1285665280), (2, 642832640), (4, 321416320), (5, 257133056), (8, 160708160), (10, 128566528), (16, 80354080), (20, 64283264), (32, 40177040), (40, 32141632), (61, 21076480), (64, 20088520), (80, 16070816), (122, 10538240), (128, 10044260), (160, 8035408), (244, 5269120), (256, 5022130), (305, 4215296), (320, 4017704), (488, 2634560), (512, 2511065), (610, 2107648), (640, 2008852), (976, 1317280), (1220, 1053824), (1280, 1004426), (1952, 658640), (2440, 526912), (2560, 502213), (3904, 329320), (4880, 263456), (7808, 164660), (8233, 156160), (9760, 131728), (15616, 82330), (16466, 78080), (19520, 65864), (31232, 41165), (32932, 39040)]