21765321

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47419}}^1$

素因数の和:47445

約数の個数: 16

約数和(自身を含む): 34142400

約数和(自身を除く): 12377079

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47419, 142257, 426771, 806123, 1280313, 2418369, 7255107, 21765321]

約数ペア:

[(1, 21765321), (3, 7255107), (9, 2418369), (17, 1280313), (27, 806123), (51, 426771), (153, 142257), (459, 47419)]