20513565

素因数分解:

$3^2\times 5^1\times {\mathrm{607}}^1\times {\mathrm{751}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 35662848

約数和(自身を除く): 15149283

約数列:

[1, 3, 5, 9, 15, 45, 607, 751, 1821, 2253, 3035, 3755, 5463, 6759, 9105, 11265, 27315, 33795, 455857, 1367571, 2279285, 4102713, 6837855, 20513565]

約数ペア:

[(1, 20513565), (3, 6837855), (5, 4102713), (9, 2279285), (15, 1367571), (45, 455857), (607, 33795), (751, 27315), (1821, 11265), (2253, 9105), (3035, 6759), (3755, 5463)]