28817721

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{22709}}^1$

素因数の和:22765

約数の個数: 16

約数和(自身を含む): 43603200

約数和(自身を除く): 14785479

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 22709, 68127, 204381, 613143, 1067323, 3201969, 9605907, 28817721]

約数ペア:

[(1, 28817721), (3, 9605907), (9, 3201969), (27, 1067323), (47, 613143), (141, 204381), (423, 68127), (1269, 22709)]