19878009

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{5717}}^1$

素因数の和:5800

約数の個数: 16

約数和(自身を含む): 28361280

約数和(自身を除く): 8483271

約数列:

[1, 3, 19, 57, 61, 183, 1159, 3477, 5717, 17151, 108623, 325869, 348737, 1046211, 6626003, 19878009]

約数ペア:

[(1, 19878009), (3, 6626003), (19, 1046211), (57, 348737), (61, 325869), (183, 108623), (1159, 17151), (3477, 5717)]