20806513

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{9941}}^1$

素因数の和:9984

約数の個数: 16

約数和(自身を含む): 26724096

約数和(自身を除く): 5917583

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 9941, 69587, 129233, 228643, 904631, 1600501, 2972359, 20806513]

約数ペア:

[(1, 20806513), (7, 2972359), (13, 1600501), (23, 904631), (91, 228643), (161, 129233), (299, 69587), (2093, 9941)]