20017025

素因数分解:

$5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1069}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 28658880

約数和(自身を除く): 8641855

約数列:

[1, 5, 7, 25, 35, 107, 175, 535, 749, 1069, 2675, 3745, 5345, 7483, 18725, 26725, 37415, 114383, 187075, 571915, 800681, 2859575, 4003405, 20017025]

約数ペア:

[(1, 20017025), (5, 4003405), (7, 2859575), (25, 800681), (35, 571915), (107, 187075), (175, 114383), (535, 37415), (749, 26725), (1069, 18725), (2675, 7483), (3745, 5345)]