4390000

素因数分解:

$2^4\times 5^4\times {\mathrm{439}}^1$

素因数の和:467

約数の個数: 50

約数和(自身を含む): 10652840

約数和(自身を除く): 6262840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 439, 500, 625, 878, 1000, 1250, 1756, 2000, 2195, 2500, 3512, 4390, 5000, 7024, 8780, 10000, 10975, 17560, 21950, 35120, 43900, 54875, 87800, 109750, 175600, 219500, 274375, 439000, 548750, 878000, 1097500, 2195000, 4390000]

約数ペア:

[(1, 4390000), (2, 2195000), (4, 1097500), (5, 878000), (8, 548750), (10, 439000), (16, 274375), (20, 219500), (25, 175600), (40, 109750), (50, 87800), (80, 54875), (100, 43900), (125, 35120), (200, 21950), (250, 17560), (400, 10975), (439, 10000), (500, 8780), (625, 7024), (878, 5000), (1000, 4390), (1250, 3512), (1756, 2500), (2000, 2195)]