201680920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{720289}}^1$

素因数の和:720307

約数の個数: 32

約数和(自身を含む): 518608800

約数和(自身を除く): 316927880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 720289, 1440578, 2881156, 3601445, 5042023, 5762312, 7202890, 10084046, 14405780, 20168092, 25210115, 28811560, 40336184, 50420230, 100840460, 201680920]

約数ペア:

[(1, 201680920), (2, 100840460), (4, 50420230), (5, 40336184), (7, 28811560), (8, 25210115), (10, 20168092), (14, 14405780), (20, 10084046), (28, 7202890), (35, 5762312), (40, 5042023), (56, 3601445), (70, 2881156), (140, 1440578), (280, 720289)]