20641689

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{44971}}^1$

素因数の和:44997

約数の個数: 16

約数和(自身を含む): 32379840

約数和(自身を除く): 11738151

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 44971, 134913, 404739, 764507, 1214217, 2293521, 6880563, 20641689]

約数ペア:

[(1, 20641689), (3, 6880563), (9, 2293521), (17, 1214217), (27, 764507), (51, 404739), (153, 134913), (459, 44971)]