21253480

素因数分解:

$2^3\times 5^1\times {\mathrm{531337}}^1$

素因数の和:531348

約数の個数: 16

約数和(自身を含む): 47820420

約数和(自身を除く): 26566940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 531337, 1062674, 2125348, 2656685, 4250696, 5313370, 10626740, 21253480]

約数ペア:

[(1, 21253480), (2, 10626740), (4, 5313370), (5, 4250696), (8, 2656685), (10, 2125348), (20, 1062674), (40, 531337)]