72003640

素因数分解:

$2^3\times 5^1\times {\mathrm{1800091}}^1$

素因数の和:1800102

約数の個数: 16

約数和(自身を含む): 162008280

約数和(自身を除く): 90004640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1800091, 3600182, 7200364, 9000455, 14400728, 18000910, 36001820, 72003640]

約数ペア:

[(1, 72003640), (2, 36001820), (4, 18000910), (5, 14400728), (8, 9000455), (10, 7200364), (20, 3600182), (40, 1800091)]