28691919

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{8831}}^1$

素因数の和:8875

約数の個数: 18

約数和(自身を含む): 43744896

約数和(自身を除く): 15052977

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 8831, 26493, 79479, 167789, 503367, 1510101, 3187991, 9563973, 28691919]

約数ペア:

[(1, 28691919), (3, 9563973), (9, 3187991), (19, 1510101), (57, 503367), (171, 167789), (361, 79479), (1083, 26493), (3249, 8831)]