8161660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31391}}^1$

素因数の和:31413

約数の個数: 24

約数和(自身を含む): 18458496

約数和(自身を除く): 10296836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 31391, 62782, 125564, 156955, 313910, 408083, 627820, 816166, 1632332, 2040415, 4080830, 8161660]

約数ペア:

[(1, 8161660), (2, 4080830), (4, 2040415), (5, 1632332), (10, 816166), (13, 627820), (20, 408083), (26, 313910), (52, 156955), (65, 125564), (130, 62782), (260, 31391)]