20089700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2543}}^1$

素因数の和:2636

約数の個数: 36

約数和(自身を含む): 44163840

約数和(自身を除く): 24074140

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2543, 3950, 5086, 7900, 10172, 12715, 25430, 50860, 63575, 127150, 200897, 254300, 401794, 803588, 1004485, 2008970, 4017940, 5022425, 10044850, 20089700]

約数ペア:

[(1, 20089700), (2, 10044850), (4, 5022425), (5, 4017940), (10, 2008970), (20, 1004485), (25, 803588), (50, 401794), (79, 254300), (100, 200897), (158, 127150), (316, 63575), (395, 50860), (790, 25430), (1580, 12715), (1975, 10172), (2543, 7900), (3950, 5086)]