81980661

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{90787}}^1$

素因数の和:90840

約数の個数: 16

約数和(自身を含む): 127829504

約数和(自身を除く): 45848843

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 90787, 272361, 635509, 1906527, 3903841, 11711523, 27326887, 81980661]

約数ペア:

[(1, 81980661), (3, 27326887), (7, 11711523), (21, 3903841), (43, 1906527), (129, 635509), (301, 272361), (903, 90787)]