21073959

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{19037}}^1$

素因数の和:19087

約数の個数: 16

約数和(自身を含む): 31983840

約数和(自身を除く): 10909881

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 19037, 57111, 171333, 513999, 780517, 2341551, 7024653, 21073959]

約数ペア:

[(1, 21073959), (3, 7024653), (9, 2341551), (27, 780517), (41, 513999), (123, 171333), (369, 57111), (1107, 19037)]