397887721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{271967}}^1$

素因数の和:272004

約数の個数: 16

約数和(自身を含む): 522178560

約数和(自身を除く): 124290839

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 271967, 1903769, 2991637, 5167373, 20941459, 36171611, 56841103, 397887721]

約数ペア:

[(1, 397887721), (7, 56841103), (11, 36171611), (19, 20941459), (77, 5167373), (133, 2991637), (209, 1903769), (1463, 271967)]