20437521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{27581}}^1$

素因数の和:27616

約数の個数: 16

約数和(自身を含む): 30891840

約数和(自身を除く): 10454319

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 27581, 82743, 358553, 524039, 1075659, 1572117, 6812507, 20437521]

約数ペア:

[(1, 20437521), (3, 6812507), (13, 1572117), (19, 1075659), (39, 524039), (57, 358553), (247, 82743), (741, 27581)]