21665787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{50503}}^1$

素因数の和:50530

約数の個数: 16

約数和(自身を含む): 33938688

約数和(自身を除く): 12272901

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 50503, 151509, 555533, 656539, 1666599, 1969617, 7221929, 21665787]

約数ペア:

[(1, 21665787), (3, 7221929), (11, 1969617), (13, 1666599), (33, 656539), (39, 555533), (143, 151509), (429, 50503)]