21001673

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{6343}}^1$

素因数の和:6404

約数の個数: 16

約数和(自身を含む): 26797056

約数和(自身を除く): 5795383

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 6343, 44401, 69773, 272749, 488411, 1909243, 3000239, 21001673]

約数ペア:

[(1, 21001673), (7, 3000239), (11, 1909243), (43, 488411), (77, 272749), (301, 69773), (473, 44401), (3311, 6343)]