18565551

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{15991}}^1$

素因数の和:16043

約数の個数: 16

約数和(自身を含む): 28145920

約数和(自身を除く): 9580369

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 15991, 47973, 143919, 431757, 687613, 2062839, 6188517, 18565551]

約数ペア:

[(1, 18565551), (3, 6188517), (9, 2062839), (27, 687613), (43, 431757), (129, 143919), (387, 47973), (1161, 15991)]