20800880

素因数分解:

$2^4\times 5^1\times {\mathrm{260011}}^1$

素因数の和:260024

約数の個数: 20

約数和(自身を含む): 48362232

約数和(自身を除く): 27561352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260011, 520022, 1040044, 1300055, 2080088, 2600110, 4160176, 5200220, 10400440, 20800880]

約数ペア:

[(1, 20800880), (2, 10400440), (4, 5200220), (5, 4160176), (8, 2600110), (10, 2080088), (16, 1300055), (20, 1040044), (40, 520022), (80, 260011)]