19268781

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1427}}^1$

素因数の和:2080

約数の個数: 16

約数和(自身を含む): 29428224

約数和(自身を除く): 10159443

約数列:

[1, 3, 7, 21, 643, 1427, 1929, 4281, 4501, 9989, 13503, 29967, 917561, 2752683, 6422927, 19268781]

約数ペア:

[(1, 19268781), (3, 6422927), (7, 2752683), (21, 917561), (643, 29967), (1427, 13503), (1929, 9989), (4281, 4501)]