18389140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11941}}^1$

素因数の和:11968

約数の個数: 48

約数和(自身を含む): 48150144

約数和(自身を除く): 29761004

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11941, 23882, 47764, 59705, 83587, 119410, 131351, 167174, 238820, 262702, 334348, 417935, 525404, 656755, 835870, 919457, 1313510, 1671740, 1838914, 2627020, 3677828, 4597285, 9194570, 18389140]

約数ペア:

[(1, 18389140), (2, 9194570), (4, 4597285), (5, 3677828), (7, 2627020), (10, 1838914), (11, 1671740), (14, 1313510), (20, 919457), (22, 835870), (28, 656755), (35, 525404), (44, 417935), (55, 334348), (70, 262702), (77, 238820), (110, 167174), (140, 131351), (154, 119410), (220, 83587), (308, 59705), (385, 47764), (770, 23882), (1540, 11941)]