20642531

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11939}}^1$

素因数の和:11978

約数の個数: 16

約数和(自身を含む): 26745600

約数和(自身を除く): 6103069

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11939, 83573, 155207, 226841, 1086449, 1587887, 2948933, 20642531]

約数ペア:

[(1, 20642531), (7, 2948933), (13, 1587887), (19, 1086449), (91, 226841), (133, 155207), (247, 83573), (1729, 11939)]