16989987

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47591}}^1$

素因数の和:47618

約数の個数: 16

約数和(自身を含む): 27412992

約数和(自身を除く): 10423005

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 47591, 142773, 333137, 809047, 999411, 2427141, 5663329, 16989987]

約数ペア:

[(1, 16989987), (3, 5663329), (7, 2427141), (17, 999411), (21, 809047), (51, 333137), (119, 142773), (357, 47591)]