19649260

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4937}}^1$

素因数の和:5145

約数の個数: 24

約数和(自身を含む): 41479200

約数和(自身を除く): 21829940

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4937, 9874, 19748, 24685, 49370, 98740, 982463, 1964926, 3929852, 4912315, 9824630, 19649260]

約数ペア:

[(1, 19649260), (2, 9824630), (4, 4912315), (5, 3929852), (10, 1964926), (20, 982463), (199, 98740), (398, 49370), (796, 24685), (995, 19748), (1990, 9874), (3980, 4937)]