21807379

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{421}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 25340256

約数和(自身を除く): 3532877

約数列:

[1, 11, 17, 187, 277, 421, 3047, 4631, 4709, 7157, 51799, 78727, 116617, 1282787, 1982489, 21807379]

約数ペア:

[(1, 21807379), (11, 1982489), (17, 1282787), (187, 116617), (277, 78727), (421, 51799), (3047, 7157), (4631, 4709)]