21950000

素因数分解:

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

素因数の和:472

約数の個数: 60

約数和(自身を含む): 53277840

約数和(自身を除く): 31327840

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, 3125, 3512, 4390, 5000, 6250, 7024, 8780, 10000, 10975, 12500, 17560, 21950, 25000, 35120, 43900, 50000, 54875, 87800, 109750, 175600, 219500, 274375, 439000, 548750, 878000, 1097500, 1371875, 2195000, 2743750, 4390000, 5487500, 10975000, 21950000]

約数ペア:

[(1, 21950000), (2, 10975000), (4, 5487500), (5, 4390000), (8, 2743750), (10, 2195000), (16, 1371875), (20, 1097500), (25, 878000), (40, 548750), (50, 439000), (80, 274375), (100, 219500), (125, 175600), (200, 109750), (250, 87800), (400, 54875), (439, 50000), (500, 43900), (625, 35120), (878, 25000), (1000, 21950), (1250, 17560), (1756, 12500), (2000, 10975), (2195, 10000), (2500, 8780), (3125, 7024), (3512, 6250), (4390, 5000)]