20161220781

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{7715737}}^1$

素因数の和:7715820

約数の個数: 16

約数和(自身を含む): 29381530304

約数和(自身を除く): 9220309523

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 7715737, 23147211, 100304581, 300913743, 516954379, 1550863137, 6720406927, 20161220781]

約数ペア:

[(1, 20161220781), (3, 6720406927), (13, 1550863137), (39, 516954379), (67, 300913743), (201, 100304581), (871, 23147211), (2613, 7715737)]