20471191

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:766

約数の個数: 16

約数和(自身を含む): 23080960

約数和(自身を除く): 2609769

約数列:

[1, 13, 31, 79, 403, 643, 1027, 2449, 8359, 19933, 31837, 50797, 259129, 660361, 1574707, 20471191]

約数ペア:

[(1, 20471191), (13, 1574707), (31, 660361), (79, 259129), (403, 50797), (643, 31837), (1027, 19933), (2449, 8359)]