20777547

素因数分解:

$3^1\times 7^1\times {\mathrm{809}}^1\times {\mathrm{1223}}^1$

素因数の和:2042

約数の個数: 16

約数和(自身を含む): 31726080

約数和(自身を除く): 10948533

約数列:

[1, 3, 7, 21, 809, 1223, 2427, 3669, 5663, 8561, 16989, 25683, 989407, 2968221, 6925849, 20777547]

約数ペア:

[(1, 20777547), (3, 6925849), (7, 2968221), (21, 989407), (809, 25683), (1223, 16989), (2427, 8561), (3669, 5663)]