19018040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11057}}^1$

素因数の和:11111

約数の個数: 32

約数和(自身を含む): 43789680

約数和(自身を除く): 24771640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11057, 22114, 44228, 55285, 88456, 110570, 221140, 442280, 475451, 950902, 1901804, 2377255, 3803608, 4754510, 9509020, 19018040]

約数ペア:

[(1, 19018040), (2, 9509020), (4, 4754510), (5, 3803608), (8, 2377255), (10, 1901804), (20, 950902), (40, 475451), (43, 442280), (86, 221140), (172, 110570), (215, 88456), (344, 55285), (430, 44228), (860, 22114), (1720, 11057)]