21020471216

素因数分解:

$2^4\times {\mathrm{5279}}^1\times {\mathrm{248869}}^1$

素因数の和:254156

約数の個数: 20

約数和(自身を含む): 40735041600

約数和(自身を除く): 19714570384

約数列:

[1, 2, 4, 8, 16, 5279, 10558, 21116, 42232, 84464, 248869, 497738, 995476, 1990952, 3981904, 1313779451, 2627558902, 5255117804, 10510235608, 21020471216]

約数ペア:

[(1, 21020471216), (2, 10510235608), (4, 5255117804), (8, 2627558902), (16, 1313779451), (5279, 3981904), (10558, 1990952), (21116, 995476), (42232, 497738), (84464, 248869)]