18115640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4397}}^1$

素因数の和:4511

約数の個数: 32

約数和(自身を含む): 41165280

約数和(自身を除く): 23049640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4397, 8794, 17588, 21985, 35176, 43970, 87940, 175880, 452891, 905782, 1811564, 2264455, 3623128, 4528910, 9057820, 18115640]

約数ペア:

[(1, 18115640), (2, 9057820), (4, 4528910), (5, 3623128), (8, 2264455), (10, 1811564), (20, 905782), (40, 452891), (103, 175880), (206, 87940), (412, 43970), (515, 35176), (824, 21985), (1030, 17588), (2060, 8794), (4120, 4397)]