19440880

素因数分解:

$2^4\times 5^1\times {\mathrm{243011}}^1$

素因数の和:243024

約数の個数: 20

約数和(自身を含む): 45200232

約数和(自身を除く): 25759352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243011, 486022, 972044, 1215055, 1944088, 2430110, 3888176, 4860220, 9720440, 19440880]

約数ペア:

[(1, 19440880), (2, 9720440), (4, 4860220), (5, 3888176), (8, 2430110), (10, 1944088), (16, 1215055), (20, 972044), (40, 486022), (80, 243011)]