18815787

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{40993}}^1$

素因数の和:41019

約数の個数: 16

約数和(自身を含む): 29515680

約数和(自身を除く): 10699893

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 40993, 122979, 368937, 696881, 1106811, 2090643, 6271929, 18815787]

約数ペア:

[(1, 18815787), (3, 6271929), (9, 2090643), (17, 1106811), (27, 696881), (51, 368937), (153, 122979), (459, 40993)]