2153804555

素因数分解:

$5^1\times 7^2\times {\mathrm{419}}^1\times {\mathrm{20981}}^1$

素因数の和:21419

約数の個数: 24

約数和(自身を含む): 3013854480

約数和(自身を除く): 860049925

約数列:

[1, 5, 7, 35, 49, 245, 419, 2095, 2933, 14665, 20531, 20981, 102655, 104905, 146867, 734335, 1028069, 5140345, 8791039, 43955195, 61537273, 307686365, 430760911, 2153804555]

約数ペア:

[(1, 2153804555), (5, 430760911), (7, 307686365), (35, 61537273), (49, 43955195), (245, 8791039), (419, 5140345), (2095, 1028069), (2933, 734335), (14665, 146867), (20531, 104905), (20981, 102655)]