128731640

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{4591}}^1$

素因数の和:5303

約数の個数: 32

約数和(自身を含む): 290122560

約数和(自身を除く): 161390920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 1402, 2804, 3505, 4591, 5608, 7010, 9182, 14020, 18364, 22955, 28040, 36728, 45910, 91820, 183640, 3218291, 6436582, 12873164, 16091455, 25746328, 32182910, 64365820, 128731640]

約数ペア:

[(1, 128731640), (2, 64365820), (4, 32182910), (5, 25746328), (8, 16091455), (10, 12873164), (20, 6436582), (40, 3218291), (701, 183640), (1402, 91820), (2804, 45910), (3505, 36728), (4591, 28040), (5608, 22955), (7010, 18364), (9182, 14020)]