28920880

素因数分解:

$2^4\times 5^1\times {\mathrm{361511}}^1$

素因数の和:361524

約数の個数: 20

約数和(自身を含む): 67241232

約数和(自身を除く): 38320352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361511, 723022, 1446044, 1807555, 2892088, 3615110, 5784176, 7230220, 14460440, 28920880]

約数ペア:

[(1, 28920880), (2, 14460440), (4, 7230220), (5, 5784176), (8, 3615110), (10, 2892088), (16, 1807555), (20, 1446044), (40, 723022), (80, 361511)]