20584880

素因数分解:

$2^4\times 5^1\times {\mathrm{257311}}^1$

素因数の和:257324

約数の個数: 20

約数和(自身を含む): 47860032

約数和(自身を除く): 27275152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257311, 514622, 1029244, 1286555, 2058488, 2573110, 4116976, 5146220, 10292440, 20584880]

約数ペア:

[(1, 20584880), (2, 10292440), (4, 5146220), (5, 4116976), (8, 2573110), (10, 2058488), (16, 1286555), (20, 1029244), (40, 514622), (80, 257311)]