8421520

素因数分解:

$2^4\times 5^1\times {\mathrm{105269}}^1$

素因数の和:105282

約数の個数: 20

約数和(自身を含む): 19580220

約数和(自身を除く): 11158700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 105269, 210538, 421076, 526345, 842152, 1052690, 1684304, 2105380, 4210760, 8421520]

約数ペア:

[(1, 8421520), (2, 4210760), (4, 2105380), (5, 1684304), (8, 1052690), (10, 842152), (16, 526345), (20, 421076), (40, 210538), (80, 105269)]