20176901440

素因数分解:

$2^6\times 5^1\times {\mathrm{811}}^1\times {\mathrm{77747}}^1$

素因数の和:78575

約数の個数: 56

約数和(自身を含む): 48106108512

約数和(自身を除く): 27929207072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 811, 1622, 3244, 4055, 6488, 8110, 12976, 16220, 25952, 32440, 51904, 64880, 77747, 129760, 155494, 259520, 310988, 388735, 621976, 777470, 1243952, 1554940, 2487904, 3109880, 4975808, 6219760, 12439520, 24879040, 63052817, 126105634, 252211268, 315264085, 504422536, 630528170, 1008845072, 1261056340, 2017690144, 2522112680, 4035380288, 5044225360, 10088450720, 20176901440]

約数ペア:

[(1, 20176901440), (2, 10088450720), (4, 5044225360), (5, 4035380288), (8, 2522112680), (10, 2017690144), (16, 1261056340), (20, 1008845072), (32, 630528170), (40, 504422536), (64, 315264085), (80, 252211268), (160, 126105634), (320, 63052817), (811, 24879040), (1622, 12439520), (3244, 6219760), (4055, 4975808), (6488, 3109880), (8110, 2487904), (12976, 1554940), (16220, 1243952), (25952, 777470), (32440, 621976), (51904, 388735), (64880, 310988), (77747, 259520), (129760, 155494)]