20516665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{719}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 6094535

約数列:

[1, 5, 13, 65, 439, 719, 2195, 3595, 5707, 9347, 28535, 46735, 315641, 1578205, 4103333, 20516665]

約数ペア:

[(1, 20516665), (5, 4103333), (13, 1578205), (65, 315641), (439, 46735), (719, 28535), (2195, 9347), (3595, 5707)]