64389275

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{673}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 82740240

約数和(自身を除く): 18350965

約数列:

[1, 5, 25, 43, 89, 215, 445, 673, 1075, 2225, 3365, 3827, 16825, 19135, 28939, 59897, 95675, 144695, 299485, 723475, 1497425, 2575571, 12877855, 64389275]

約数ペア:

[(1, 64389275), (5, 12877855), (25, 2575571), (43, 1497425), (89, 723475), (215, 299485), (445, 144695), (673, 95675), (1075, 59897), (2225, 28939), (3365, 19135), (3827, 16825)]