20245000

素因数分解:

$2^3\times 5^4\times {\mathrm{4049}}^1$

素因数の和:4075

約数の個数: 40

約数和(自身を含む): 47445750

約数和(自身を除く): 27200750

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4049, 5000, 8098, 16196, 20245, 32392, 40490, 80980, 101225, 161960, 202450, 404900, 506125, 809800, 1012250, 2024500, 2530625, 4049000, 5061250, 10122500, 20245000]

約数ペア:

[(1, 20245000), (2, 10122500), (4, 5061250), (5, 4049000), (8, 2530625), (10, 2024500), (20, 1012250), (25, 809800), (40, 506125), (50, 404900), (100, 202450), (125, 161960), (200, 101225), (250, 80980), (500, 40490), (625, 32392), (1000, 20245), (1250, 16196), (2500, 8098), (4049, 5000)]