21264710

素因数分解:

$2^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{5051}}^1$

素因数の和:5479

約数の個数: 16

約数和(自身を含む): 38374992

約数和(自身を除く): 17110282

約数列:

[1, 2, 5, 10, 421, 842, 2105, 4210, 5051, 10102, 25255, 50510, 2126471, 4252942, 10632355, 21264710]

約数ペア:

[(1, 21264710), (2, 10632355), (5, 4252942), (10, 2126471), (421, 50510), (842, 25255), (2105, 10102), (4210, 5051)]