21072513

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8293}}^1$

素因数の和:8325

約数の個数: 24

約数和(自身を含む): 35299264

約数和(自身を除く): 14226751

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8293, 24879, 58051, 91223, 174153, 273669, 638561, 1003453, 1915683, 3010359, 7024171, 21072513]

約数ペア:

[(1, 21072513), (3, 7024171), (7, 3010359), (11, 1915683), (21, 1003453), (33, 638561), (77, 273669), (121, 174153), (231, 91223), (363, 58051), (847, 24879), (2541, 8293)]