30921205

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2069}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 43892280

約数和(自身を除く): 12971075

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 2069, 2135, 2989, 10345, 14483, 14945, 72415, 101381, 126209, 506905, 631045, 883463, 4417315, 6184241, 30921205]

約数ペア:

[(1, 30921205), (5, 6184241), (7, 4417315), (35, 883463), (49, 631045), (61, 506905), (245, 126209), (305, 101381), (427, 72415), (2069, 14945), (2135, 14483), (2989, 10345)]