28078947

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{79997}}^1$

素因数の和:80019

約数の個数: 16

約数和(自身を含む): 44798880

約数和(自身を除く): 16719933

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 79997, 239991, 719973, 1039961, 2159919, 3119883, 9359649, 28078947]

約数ペア:

[(1, 28078947), (3, 9359649), (9, 3119883), (13, 2159919), (27, 1039961), (39, 719973), (117, 239991), (351, 79997)]