20497281

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16001}}^1$

素因数の和:16072

約数の個数: 16

約数和(自身を含む): 31747968

約数和(自身を除く): 11250687

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16001, 48003, 112007, 336021, 976061, 2928183, 6832427, 20497281]

約数ペア:

[(1, 20497281), (3, 6832427), (7, 2928183), (21, 976061), (61, 336021), (183, 112007), (427, 48003), (1281, 16001)]