21554911

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3769}}^1$

素因数の和:3838

約数の個数: 16

約数和(自身を含む): 26540800

約数和(自身を除く): 4985889

約数列:

[1, 7, 19, 43, 133, 301, 817, 3769, 5719, 26383, 71611, 162067, 501277, 1134469, 3079273, 21554911]

約数ペア:

[(1, 21554911), (7, 3079273), (19, 1134469), (43, 501277), (133, 162067), (301, 71611), (817, 26383), (3769, 5719)]