9940021

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5749}}^1$

素因数の和:5788

約数の個数: 16

約数和(自身を含む): 12880000

約数和(自身を除く): 2939979

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 5749, 40243, 74737, 109231, 523159, 764617, 1420003, 9940021]

約数ペア:

[(1, 9940021), (7, 1420003), (13, 764617), (19, 523159), (91, 109231), (133, 74737), (247, 40243), (1729, 5749)]