20579881

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 24344320

約数和(自身を除く): 3764439

約数列:

[1, 7, 37, 181, 259, 439, 1267, 3073, 6697, 16243, 46879, 79459, 113701, 556213, 2939983, 20579881]

約数ペア:

[(1, 20579881), (7, 2939983), (37, 556213), (181, 113701), (259, 79459), (439, 46879), (1267, 16243), (3073, 6697)]