20747120

素因数分解:

$2^4\times 5^1\times {\mathrm{259339}}^1$

素因数の和:259352

約数の個数: 20

約数和(自身を含む): 48237240

約数和(自身を除く): 27490120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259339, 518678, 1037356, 1296695, 2074712, 2593390, 4149424, 5186780, 10373560, 20747120]

約数ペア:

[(1, 20747120), (2, 10373560), (4, 5186780), (5, 4149424), (8, 2593390), (10, 2074712), (16, 1296695), (20, 1037356), (40, 518678), (80, 259339)]