19451780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4937}}^1$

素因数の和:5143

約数の個数: 24

約数和(自身を含む): 41064408

約数和(自身を除く): 21612628

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4937, 9874, 19748, 24685, 49370, 98740, 972589, 1945178, 3890356, 4862945, 9725890, 19451780]

約数ペア:

[(1, 19451780), (2, 9725890), (4, 4862945), (5, 3890356), (10, 1945178), (20, 972589), (197, 98740), (394, 49370), (788, 24685), (985, 19748), (1970, 9874), (3940, 4937)]