27789471

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 41112864

約数和(自身を除く): 13323393

約数列:

[1, 3, 9, 71, 157, 213, 277, 471, 639, 831, 1413, 2493, 11147, 19667, 33441, 43489, 59001, 100323, 130467, 177003, 391401, 3087719, 9263157, 27789471]

約数ペア:

[(1, 27789471), (3, 9263157), (9, 3087719), (71, 391401), (157, 177003), (213, 130467), (277, 100323), (471, 59001), (639, 43489), (831, 33441), (1413, 19667), (2493, 11147)]