18660040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{66643}}^1$

素因数の和:66661

約数の個数: 32

約数和(自身を含む): 47983680

約数和(自身を除く): 29323640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 66643, 133286, 266572, 333215, 466501, 533144, 666430, 933002, 1332860, 1866004, 2332505, 2665720, 3732008, 4665010, 9330020, 18660040]

約数ペア:

[(1, 18660040), (2, 9330020), (4, 4665010), (5, 3732008), (7, 2665720), (8, 2332505), (10, 1866004), (14, 1332860), (20, 933002), (28, 666430), (35, 533144), (40, 466501), (56, 333215), (70, 266572), (140, 133286), (280, 66643)]