123456580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{1409}}^1$

素因数の和:1768

約数の個数: 48

約数和(自身を含む): 280229040

約数和(自身を除く): 156772460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 337, 674, 1348, 1409, 1685, 2818, 3370, 4381, 5636, 6740, 7045, 8762, 14090, 17524, 18317, 21905, 28180, 36634, 43810, 73268, 87620, 91585, 183170, 366340, 474833, 949666, 1899332, 2374165, 4748330, 6172829, 9496660, 12345658, 24691316, 30864145, 61728290, 123456580]

約数ペア:

[(1, 123456580), (2, 61728290), (4, 30864145), (5, 24691316), (10, 12345658), (13, 9496660), (20, 6172829), (26, 4748330), (52, 2374165), (65, 1899332), (130, 949666), (260, 474833), (337, 366340), (674, 183170), (1348, 91585), (1409, 87620), (1685, 73268), (2818, 43810), (3370, 36634), (4381, 28180), (5636, 21905), (6740, 18317), (7045, 17524), (8762, 14090)]