20211247

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{809}}^1$

素因数の和:942

約数の個数: 16

約数和(自身を含む): 23950080

約数和(自身を除く): 3738833

約数列:

[1, 7, 43, 83, 301, 581, 809, 3569, 5663, 24983, 34787, 67147, 243509, 470029, 2887321, 20211247]

約数ペア:

[(1, 20211247), (7, 2887321), (43, 470029), (83, 243509), (301, 67147), (581, 34787), (809, 24983), (3569, 5663)]