21439089

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4793}}^1$

素因数の和:4877

約数の個数: 24

約数和(自身を含む): 35897472

約数和(自身を除く): 14458383

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4793, 14379, 33551, 43137, 100653, 301959, 340303, 1020909, 2382121, 3062727, 7146363, 21439089]

約数ペア:

[(1, 21439089), (3, 7146363), (7, 3062727), (9, 2382121), (21, 1020909), (63, 340303), (71, 301959), (213, 100653), (497, 43137), (639, 33551), (1491, 14379), (4473, 4793)]