26987877

素因数分解:

$3^3\times 7^2\times {\mathrm{20399}}^1$

素因数の和:20422

約数の個数: 24

約数和(自身を含む): 46512000

約数和(自身を除く): 19524123

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 20399, 61197, 142793, 183591, 428379, 550773, 999551, 1285137, 2998653, 3855411, 8995959, 26987877]

約数ペア:

[(1, 26987877), (3, 8995959), (7, 3855411), (9, 2998653), (21, 1285137), (27, 999551), (49, 550773), (63, 428379), (147, 183591), (189, 142793), (441, 61197), (1323, 20399)]