212487

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:198

約数の個数: 16

約数和(自身を含む): 317952

約数和(自身を除く): 105465

約数列:

[1, 3, 11, 33, 47, 137, 141, 411, 517, 1507, 1551, 4521, 6439, 19317, 70829, 212487]

約数ペア:

[(1, 212487), (3, 70829), (11, 19317), (33, 6439), (47, 4521), (137, 1551), (141, 1507), (411, 517)]