21005061

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90931}}^1$

素因数の和:90952

約数の個数: 16

約数和(自身を含む): 34917888

約数和(自身を除く): 13912827

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90931, 272793, 636517, 1000241, 1909551, 3000723, 7001687, 21005061]

約数ペア:

[(1, 21005061), (3, 7001687), (7, 3000723), (11, 1909551), (21, 1000241), (33, 636517), (77, 272793), (231, 90931)]