21078211

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{599}}^1$

素因数の和:1074

約数の個数: 16

約数和(自身を含む): 26380800

約数和(自身を除く): 5302589

約数列:

[1, 7, 11, 77, 457, 599, 3199, 4193, 5027, 6589, 35189, 46123, 273743, 1916201, 3011173, 21078211]

約数ペア:

[(1, 21078211), (7, 3011173), (11, 1916201), (77, 273743), (457, 46123), (599, 35189), (3199, 6589), (4193, 5027)]