21131097

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28517}}^1$

素因数の和:28552

約数の個数: 16

約数和(自身を含む): 31940160

約数和(自身を除く): 10809063

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28517, 85551, 370721, 541823, 1112163, 1625469, 7043699, 21131097]

約数ペア:

[(1, 21131097), (3, 7043699), (13, 1625469), (19, 1112163), (39, 541823), (57, 370721), (247, 85551), (741, 28517)]