1287800

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 3080160

約数和(自身を除く): 1792360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 137, 188, 200, 235, 274, 376, 470, 548, 685, 940, 1096, 1175, 1370, 1880, 2350, 2740, 3425, 4700, 5480, 6439, 6850, 9400, 12878, 13700, 25756, 27400, 32195, 51512, 64390, 128780, 160975, 257560, 321950, 643900, 1287800]

約数ペア:

[(1, 1287800), (2, 643900), (4, 321950), (5, 257560), (8, 160975), (10, 128780), (20, 64390), (25, 51512), (40, 32195), (47, 27400), (50, 25756), (94, 13700), (100, 12878), (137, 9400), (188, 6850), (200, 6439), (235, 5480), (274, 4700), (376, 3425), (470, 2740), (548, 2350), (685, 1880), (940, 1370), (1096, 1175)]