18420193

素因数分解:

${\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 21450240

約数和(自身を除く): 3030047

約数列:

[1, 11, 41, 47, 79, 121, 451, 517, 869, 1927, 3239, 3713, 4961, 5687, 9559, 21197, 35629, 40843, 152233, 233167, 391919, 449273, 1674563, 18420193]

約数ペア:

[(1, 18420193), (11, 1674563), (41, 449273), (47, 391919), (79, 233167), (121, 152233), (451, 40843), (517, 35629), (869, 21197), (1927, 9559), (3239, 5687), (3713, 4961)]