20820381

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{1753}}^1$

素因数の和:1900

約数の個数: 16

約数和(自身を含む): 28793664

約数和(自身を除く): 7973283

約数列:

[1, 3, 37, 107, 111, 321, 1753, 3959, 5259, 11877, 64861, 187571, 194583, 562713, 6940127, 20820381]

約数ペア:

[(1, 20820381), (3, 6940127), (37, 562713), (107, 194583), (111, 187571), (321, 64861), (1753, 11877), (3959, 5259)]