1281944000

素因数分解:

$2^6\times 5^3\times {\mathrm{160243}}^1$

素因数の和:160270

約数の個数: 56

約数和(自身を含む): 3174754128

約数和(自身を除く): 1892810128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 4000, 8000, 160243, 320486, 640972, 801215, 1281944, 1602430, 2563888, 3204860, 4006075, 5127776, 6409720, 8012150, 10255552, 12819440, 16024300, 20030375, 25638880, 32048600, 40060750, 51277760, 64097200, 80121500, 128194400, 160243000, 256388800, 320486000, 640972000, 1281944000]

約数ペア:

[(1, 1281944000), (2, 640972000), (4, 320486000), (5, 256388800), (8, 160243000), (10, 128194400), (16, 80121500), (20, 64097200), (25, 51277760), (32, 40060750), (40, 32048600), (50, 25638880), (64, 20030375), (80, 16024300), (100, 12819440), (125, 10255552), (160, 8012150), (200, 6409720), (250, 5127776), (320, 4006075), (400, 3204860), (500, 2563888), (800, 1602430), (1000, 1281944), (1600, 801215), (2000, 640972), (4000, 320486), (8000, 160243)]