18810890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2609}}^1$

素因数の和:2726

約数の個数: 32

約数和(自身を含む): 39087360

約数和(自身を除く): 20276470

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 103, 206, 515, 721, 1030, 1442, 2609, 3605, 5218, 7210, 13045, 18263, 26090, 36526, 91315, 182630, 268727, 537454, 1343635, 1881089, 2687270, 3762178, 9405445, 18810890]

約数ペア:

[(1, 18810890), (2, 9405445), (5, 3762178), (7, 2687270), (10, 1881089), (14, 1343635), (35, 537454), (70, 268727), (103, 182630), (206, 91315), (515, 36526), (721, 26090), (1030, 18263), (1442, 13045), (2609, 7210), (3605, 5218)]