20569840

素因数分解:

$2^4\times 5^1\times {\mathrm{257123}}^1$

素因数の和:257136

約数の個数: 20

約数和(自身を含む): 47825064

約数和(自身を除く): 27255224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257123, 514246, 1028492, 1285615, 2056984, 2571230, 4113968, 5142460, 10284920, 20569840]

約数ペア:

[(1, 20569840), (2, 10284920), (4, 5142460), (5, 4113968), (8, 2571230), (10, 2056984), (16, 1285615), (20, 1028492), (40, 514246), (80, 257123)]