2099405

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:90

約数の個数: 48

約数和(自身を含む): 3447360

約数和(自身を除く): 1347955

約数列:

[1, 5, 7, 11, 19, 35, 41, 49, 55, 77, 95, 133, 205, 209, 245, 287, 385, 451, 539, 665, 779, 931, 1045, 1435, 1463, 2009, 2255, 2695, 3157, 3895, 4655, 5453, 7315, 8569, 10045, 10241, 15785, 22099, 27265, 38171, 42845, 51205, 59983, 110495, 190855, 299915, 419881, 2099405]

約数ペア:

[(1, 2099405), (5, 419881), (7, 299915), (11, 190855), (19, 110495), (35, 59983), (41, 51205), (49, 42845), (55, 38171), (77, 27265), (95, 22099), (133, 15785), (205, 10241), (209, 10045), (245, 8569), (287, 7315), (385, 5453), (451, 4655), (539, 3895), (665, 3157), (779, 2695), (931, 2255), (1045, 2009), (1435, 1463)]