18306939

素因数分解:

$3^1\times 7^3\times {\mathrm{17791}}^1$

素因数の和:17815

約数の個数: 16

約数和(自身を含む): 28467200

約数和(自身を除く): 10160261

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 17791, 53373, 124537, 373611, 871759, 2615277, 6102313, 18306939]

約数ペア:

[(1, 18306939), (3, 6102313), (7, 2615277), (21, 871759), (49, 373611), (147, 124537), (343, 53373), (1029, 17791)]