81384681

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{90127}}^1$

素因数の和:90180

約数の個数: 16

約数和(自身を含む): 126900224

約数和(自身を除く): 45515543

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 90127, 270381, 630889, 1892667, 3875461, 11626383, 27128227, 81384681]

約数ペア:

[(1, 81384681), (3, 27128227), (7, 11626383), (21, 3875461), (43, 1892667), (129, 630889), (301, 270381), (903, 90127)]