128520567

素因数分解:

$3^3\times 7^1\times {\mathrm{680003}}^1$

素因数の和:680019

約数の個数: 16

約数和(自身を含む): 217601280

約数和(自身を除く): 89080713

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 680003, 2040009, 4760021, 6120027, 14280063, 18360081, 42840189, 128520567]

約数ペア:

[(1, 128520567), (3, 42840189), (7, 18360081), (9, 14280063), (21, 6120027), (27, 4760021), (63, 2040009), (189, 680003)]