78551780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{19937}}^1$

素因数の和:20143

約数の個数: 24

約数和(自身を含む): 165804408

約数和(自身を除く): 87252628

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 19937, 39874, 79748, 99685, 199370, 398740, 3927589, 7855178, 15710356, 19637945, 39275890, 78551780]

約数ペア:

[(1, 78551780), (2, 39275890), (4, 19637945), (5, 15710356), (10, 7855178), (20, 3927589), (197, 398740), (394, 199370), (788, 99685), (985, 79748), (1970, 39874), (3940, 19937)]