20457787

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1\times {\mathrm{449}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 24537600

約数和(自身を除く): 4079813

約数列:

[1, 7, 23, 161, 283, 449, 1981, 3143, 6509, 10327, 45563, 72289, 127067, 889469, 2922541, 20457787]

約数ペア:

[(1, 20457787), (7, 2922541), (23, 889469), (161, 127067), (283, 72289), (449, 45563), (1981, 10327), (3143, 6509)]