18905787

素因数分解:

$3^2\times {\mathrm{509}}^1\times {\mathrm{4127}}^1$

素因数の和:4642

約数の個数: 12

約数和(自身を含む): 27368640

約数和(自身を除く): 8462853

約数列:

[1, 3, 9, 509, 1527, 4127, 4581, 12381, 37143, 2100643, 6301929, 18905787]

約数ペア:

[(1, 18905787), (3, 6301929), (9, 2100643), (509, 37143), (1527, 12381), (4127, 4581)]