21090615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15451}}^1$

素因数の和:15479

約数の個数: 32

約数和(自身を含む): 41534976

約数和(自身を除く): 20444361

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15451, 46353, 77255, 108157, 200863, 231765, 324471, 540785, 602589, 1004315, 1406041, 1622355, 3012945, 4218123, 7030205, 21090615]

約数ペア:

[(1, 21090615), (3, 7030205), (5, 4218123), (7, 3012945), (13, 1622355), (15, 1406041), (21, 1004315), (35, 602589), (39, 540785), (65, 324471), (91, 231765), (105, 200863), (195, 108157), (273, 77255), (455, 46353), (1365, 15451)]