21895880

素因数分解:

$2^3\times 5^1\times {\mathrm{547397}}^1$

素因数の和:547408

約数の個数: 16

約数和(自身を含む): 49265820

約数和(自身を除く): 27369940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547397, 1094794, 2189588, 2736985, 4379176, 5473970, 10947940, 21895880]

約数ペア:

[(1, 21895880), (2, 10947940), (4, 5473970), (5, 4379176), (8, 2736985), (10, 2189588), (20, 1094794), (40, 547397)]