20805919617

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2137}}^1\times {\mathrm{2953}}^1$

素因数の和:5257

約数の個数: 32

約数和(自身を含む): 31931936512

約数和(自身を除く): 11126016895

約数列:

[1, 3, 7, 21, 157, 471, 1099, 2137, 2953, 3297, 6411, 8859, 14959, 20671, 44877, 62013, 335509, 463621, 1006527, 1390863, 2348563, 3245347, 6310561, 7045689, 9736041, 18931683, 44173927, 132521781, 990758077, 2972274231, 6935306539, 20805919617]

約数ペア:

[(1, 20805919617), (3, 6935306539), (7, 2972274231), (21, 990758077), (157, 132521781), (471, 44173927), (1099, 18931683), (2137, 9736041), (2953, 7045689), (3297, 6310561), (6411, 3245347), (8859, 2348563), (14959, 1390863), (20671, 1006527), (44877, 463621), (62013, 335509)]