21427785

素因数分解:

$3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4909}}^1$

素因数の和:5017

約数の個数: 24

約数和(自身を含む): 37532040

約数和(自身を除く): 16104255

約数列:

[1, 3, 5, 9, 15, 45, 97, 291, 485, 873, 1455, 4365, 4909, 14727, 24545, 44181, 73635, 220905, 476173, 1428519, 2380865, 4285557, 7142595, 21427785]

約数ペア:

[(1, 21427785), (3, 7142595), (5, 4285557), (9, 2380865), (15, 1428519), (45, 476173), (97, 220905), (291, 73635), (485, 44181), (873, 24545), (1455, 14727), (4365, 4909)]