21320499

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{3907}}^1$

素因数の和:4034

約数の個数: 16

約数和(自身を含む): 30388608

約数和(自身を除く): 9068109

約数列:

[1, 3, 17, 51, 107, 321, 1819, 3907, 5457, 11721, 66419, 199257, 418049, 1254147, 7106833, 21320499]

約数ペア:

[(1, 21320499), (3, 7106833), (17, 1254147), (51, 418049), (107, 199257), (321, 66419), (1819, 11721), (3907, 5457)]