28991439

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{4903}}^1$

素因数の和:4988

約数の個数: 20

約数和(自身を含む): 43910416

約数和(自身を除く): 14918977

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 4903, 5913, 14709, 44127, 132381, 357919, 397143, 1073757, 3221271, 9663813, 28991439]

約数ペア:

[(1, 28991439), (3, 9663813), (9, 3221271), (27, 1073757), (73, 397143), (81, 357919), (219, 132381), (657, 44127), (1971, 14709), (4903, 5913)]