20512459840

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2787019}}^1$

素因数の和:2787059

約数の個数: 56

約数和(自身を含む): 50969021760

約数和(自身を除く): 30456561920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 160, 184, 230, 320, 368, 460, 736, 920, 1472, 1840, 3680, 7360, 2787019, 5574038, 11148076, 13935095, 22296152, 27870190, 44592304, 55740380, 64101437, 89184608, 111480760, 128202874, 178369216, 222961520, 256405748, 320507185, 445923040, 512811496, 641014370, 891846080, 1025622992, 1282028740, 2051245984, 2564057480, 4102491968, 5128114960, 10256229920, 20512459840]

約数ペア:

[(1, 20512459840), (2, 10256229920), (4, 5128114960), (5, 4102491968), (8, 2564057480), (10, 2051245984), (16, 1282028740), (20, 1025622992), (23, 891846080), (32, 641014370), (40, 512811496), (46, 445923040), (64, 320507185), (80, 256405748), (92, 222961520), (115, 178369216), (160, 128202874), (184, 111480760), (230, 89184608), (320, 64101437), (368, 55740380), (460, 44592304), (736, 27870190), (920, 22296152), (1472, 13935095), (1840, 11148076), (3680, 5574038), (7360, 2787019)]