8642739

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{21661}}^1$

素因数の和:21690

約数の個数: 16

約数和(自身を含む): 13863680

約数和(自身を除く): 5220941

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 21661, 64983, 151627, 411559, 454881, 1234677, 2880913, 8642739]

約数ペア:

[(1, 8642739), (3, 2880913), (7, 1234677), (19, 454881), (21, 411559), (57, 151627), (133, 64983), (399, 21661)]