18913531

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10939}}^1$

素因数の和:10978

約数の個数: 16

約数和(自身を含む): 24505600

約数和(自身を除く): 5592069

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 10939, 76573, 142207, 207841, 995449, 1454887, 2701933, 18913531]

約数ペア:

[(1, 18913531), (7, 2701933), (13, 1454887), (19, 995449), (91, 207841), (133, 142207), (247, 76573), (1729, 10939)]