18720523

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 20021760

約数和(自身を除く): 1301237

約数列:

[1, 43, 47, 59, 157, 2021, 2537, 2773, 6751, 7379, 9263, 119239, 317297, 398309, 435361, 18720523]

約数ペア:

[(1, 18720523), (43, 435361), (47, 398309), (59, 317297), (157, 119239), (2021, 9263), (2537, 7379), (2773, 6751)]