72642640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{129719}}^1$

素因数の和:129739

約数の個数: 40

約数和(自身を含む): 193023360

約数和(自身を除く): 120380720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 129719, 259438, 518876, 648595, 908033, 1037752, 1297190, 1816066, 2075504, 2594380, 3632132, 4540165, 5188760, 7264264, 9080330, 10377520, 14528528, 18160660, 36321320, 72642640]

約数ペア:

[(1, 72642640), (2, 36321320), (4, 18160660), (5, 14528528), (7, 10377520), (8, 9080330), (10, 7264264), (14, 5188760), (16, 4540165), (20, 3632132), (28, 2594380), (35, 2075504), (40, 1816066), (56, 1297190), (70, 1037752), (80, 908033), (112, 648595), (140, 518876), (280, 259438), (560, 129719)]