257557887

素因数分解:

$3^6\times {\mathrm{23}}^1\times {\mathrm{15361}}^1$

素因数の和:15402

約数の個数: 28

約数和(自身を含む): 402975984

約数和(自身を除く): 145418097

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 243, 621, 729, 1863, 5589, 15361, 16767, 46083, 138249, 353303, 414747, 1059909, 1244241, 3179727, 3732723, 9539181, 11198169, 28617543, 85852629, 257557887]

約数ペア:

[(1, 257557887), (3, 85852629), (9, 28617543), (23, 11198169), (27, 9539181), (69, 3732723), (81, 3179727), (207, 1244241), (243, 1059909), (621, 414747), (729, 353303), (1863, 138249), (5589, 46083), (15361, 16767)]