205207345

素因数分解:

$5^1\times 7^2\times {\mathrm{419}}^1\times {\mathrm{1999}}^1$

素因数の和:2437

約数の個数: 24

約数和(自身を含む): 287280000

約数和(自身を除く): 82072655

約数列:

[1, 5, 7, 35, 49, 245, 419, 1999, 2095, 2933, 9995, 13993, 14665, 20531, 69965, 97951, 102655, 489755, 837581, 4187905, 5863067, 29315335, 41041469, 205207345]

約数ペア:

[(1, 205207345), (5, 41041469), (7, 29315335), (35, 5863067), (49, 4187905), (245, 837581), (419, 489755), (1999, 102655), (2095, 97951), (2933, 69965), (9995, 20531), (13993, 14665)]