16991721

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{37019}}^1$

素因数の和:37045

約数の個数: 16

約数和(自身を含む): 26654400

約数和(自身を除く): 9662679

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 37019, 111057, 333171, 629323, 999513, 1887969, 5663907, 16991721]

約数ペア:

[(1, 16991721), (3, 5663907), (9, 1887969), (17, 999513), (27, 629323), (51, 333171), (153, 111057), (459, 37019)]