990143

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{167}}^1$

素因数の和:203

約数の個数: 18

約数和(自身を含む): 1273608

約数和(自身を除く): 283465

約数列:

[1, 7, 11, 49, 77, 121, 167, 539, 847, 1169, 1837, 5929, 8183, 12859, 20207, 90013, 141449, 990143]

約数ペア:

[(1, 990143), (7, 141449), (11, 90013), (49, 20207), (77, 12859), (121, 8183), (167, 5929), (539, 1837), (847, 1169)]