256475000

素因数分解:

$2^3\times 5^5\times {\mathrm{10259}}^1$

素因数の和:10290

約数の個数: 48

約数和(自身を含む): 601133400

約数和(自身を除く): 344658400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 3125, 5000, 6250, 10259, 12500, 20518, 25000, 41036, 51295, 82072, 102590, 205180, 256475, 410360, 512950, 1025900, 1282375, 2051800, 2564750, 5129500, 6411875, 10259000, 12823750, 25647500, 32059375, 51295000, 64118750, 128237500, 256475000]

約数ペア:

[(1, 256475000), (2, 128237500), (4, 64118750), (5, 51295000), (8, 32059375), (10, 25647500), (20, 12823750), (25, 10259000), (40, 6411875), (50, 5129500), (100, 2564750), (125, 2051800), (200, 1282375), (250, 1025900), (500, 512950), (625, 410360), (1000, 256475), (1250, 205180), (2500, 102590), (3125, 82072), (5000, 51295), (6250, 41036), (10259, 25000), (12500, 20518)]