18678519

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2591}}^1$

素因数の和:2692

約数の個数: 20

約数和(自身を含む): 28226880

約数和(自身を除く): 9548361

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2591, 7209, 7773, 23319, 69957, 209871, 230599, 691797, 2075391, 6226173, 18678519]

約数ペア:

[(1, 18678519), (3, 6226173), (9, 2075391), (27, 691797), (81, 230599), (89, 209871), (267, 69957), (801, 23319), (2403, 7773), (2591, 7209)]