20571717712

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1777}}^1\times {\mathrm{7951}}^1$

素因数の和:9756

約数の個数: 80

約数和(自身を含む): 49089413632

約数和(自身を除く): 28517695920

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 1777, 3554, 7108, 7951, 12439, 14216, 15902, 23101, 24878, 28432, 31804, 46202, 49756, 55657, 63608, 92404, 99512, 103363, 111314, 127216, 161707, 184808, 199024, 206726, 222628, 323414, 369616, 413452, 445256, 646828, 723541, 826904, 890512, 1293656, 1447082, 1653808, 2587312, 2894164, 5788328, 11576656, 14128927, 28257854, 56515708, 98902489, 113031416, 183676051, 197804978, 226062832, 367352102, 395609956, 734704204, 791219912, 1285732357, 1469408408, 1582439824, 2571464714, 2938816816, 5142929428, 10285858856, 20571717712]

約数ペア:

[(1, 20571717712), (2, 10285858856), (4, 5142929428), (7, 2938816816), (8, 2571464714), (13, 1582439824), (14, 1469408408), (16, 1285732357), (26, 791219912), (28, 734704204), (52, 395609956), (56, 367352102), (91, 226062832), (104, 197804978), (112, 183676051), (182, 113031416), (208, 98902489), (364, 56515708), (728, 28257854), (1456, 14128927), (1777, 11576656), (3554, 5788328), (7108, 2894164), (7951, 2587312), (12439, 1653808), (14216, 1447082), (15902, 1293656), (23101, 890512), (24878, 826904), (28432, 723541), (31804, 646828), (46202, 445256), (49756, 413452), (55657, 369616), (63608, 323414), (92404, 222628), (99512, 206726), (103363, 199024), (111314, 184808), (127216, 161707)]