20785646

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 36780480

約数和(自身を除く): 15994834

約数列:

[1, 2, 7, 14, 53, 106, 109, 218, 257, 371, 514, 742, 763, 1526, 1799, 3598, 5777, 11554, 13621, 27242, 28013, 40439, 56026, 80878, 95347, 190694, 196091, 392182, 1484689, 2969378, 10392823, 20785646]

約数ペア:

[(1, 20785646), (2, 10392823), (7, 2969378), (14, 1484689), (53, 392182), (106, 196091), (109, 190694), (218, 95347), (257, 80878), (371, 56026), (514, 40439), (742, 28013), (763, 27242), (1526, 13621), (1799, 11554), (3598, 5777)]