21045339

素因数分解:

$3^4\times 7^1\times {\mathrm{37117}}^1$

素因数の和:37136

約数の個数: 20

約数和(自身を含む): 35930224

約数和(自身を除く): 14884885

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37117, 111351, 259819, 334053, 779457, 1002159, 2338371, 3006477, 7015113, 21045339]

約数ペア:

[(1, 21045339), (3, 7015113), (7, 3006477), (9, 2338371), (21, 1002159), (27, 779457), (63, 334053), (81, 259819), (189, 111351), (567, 37117)]