21147009

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{8093}}^1$

素因数の和:8176

約数の個数: 16

約数和(自身を含む): 30821952

約数和(自身を除く): 9674943

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 8093, 24279, 105209, 315627, 542231, 1626693, 7049003, 21147009]

約数ペア:

[(1, 21147009), (3, 7049003), (13, 1626693), (39, 542231), (67, 315627), (201, 105209), (871, 24279), (2613, 8093)]