20980216

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{859}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 19886984

約数列:

[1, 2, 4, 8, 43, 71, 86, 142, 172, 284, 344, 568, 859, 1718, 3053, 3436, 6106, 6872, 12212, 24424, 36937, 60989, 73874, 121978, 147748, 243956, 295496, 487912, 2622527, 5245054, 10490108, 20980216]

約数ペア:

[(1, 20980216), (2, 10490108), (4, 5245054), (8, 2622527), (43, 487912), (71, 295496), (86, 243956), (142, 147748), (172, 121978), (284, 73874), (344, 60989), (568, 36937), (859, 24424), (1718, 12212), (3053, 6872), (3436, 6106)]