21812139

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47521}}^1$

素因数の和:47547

約数の個数: 16

約数和(自身を含む): 34215840

約数和(自身を除く): 12403701

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47521, 142563, 427689, 807857, 1283067, 2423571, 7270713, 21812139]

約数ペア:

[(1, 21812139), (3, 7270713), (9, 2423571), (17, 1283067), (27, 807857), (51, 427689), (153, 142563), (459, 47521)]