21279518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{7649}}^1$

素因数の和:7771

約数の個数: 16

約数和(自身を含む): 34700400

約数和(自身を除く): 13420882

約数列:

[1, 2, 13, 26, 107, 214, 1391, 2782, 7649, 15298, 99437, 198874, 818443, 1636886, 10639759, 21279518]

約数ペア:

[(1, 21279518), (2, 10639759), (13, 1636886), (26, 818443), (107, 198874), (214, 99437), (1391, 15298), (2782, 7649)]