31517181

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{20479}}^1$

素因数の和:20510

約数の個数: 20

約数和(自身を含む): 49561600

約数和(自身を除く): 18044419

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 20479, 61437, 184311, 389101, 552933, 1167303, 1658799, 3501909, 10505727, 31517181]

約数ペア:

[(1, 31517181), (3, 10505727), (9, 3501909), (19, 1658799), (27, 1167303), (57, 552933), (81, 389101), (171, 184311), (513, 61437), (1539, 20479)]