18806781

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 29905920

約数和(自身を除く): 11099139

約数列:

[1, 3, 7, 21, 43, 59, 129, 177, 301, 353, 413, 903, 1059, 1239, 2471, 2537, 7413, 7611, 15179, 17759, 20827, 45537, 53277, 62481, 106253, 145789, 318759, 437367, 895561, 2686683, 6268927, 18806781]

約数ペア:

[(1, 18806781), (3, 6268927), (7, 2686683), (21, 895561), (43, 437367), (59, 318759), (129, 145789), (177, 106253), (301, 62481), (353, 53277), (413, 45537), (903, 20827), (1059, 17759), (1239, 15179), (2471, 7611), (2537, 7413)]