19919305

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12109}}^1$

素因数の和:12168

約数の個数: 16

約数和(自身を含む): 27901440

約数和(自身を除く): 7982135

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 12109, 60545, 84763, 423815, 569123, 2845615, 3983861, 19919305]

約数ペア:

[(1, 19919305), (5, 3983861), (7, 2845615), (35, 569123), (47, 423815), (235, 84763), (329, 60545), (1645, 12109)]