2008000

素因数分解:

$2^6\times 5^3\times {\mathrm{251}}^1$

素因数の和:278

約数の個数: 56

約数和(自身を含む): 4992624

約数和(自身を除く): 2984624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 251, 320, 400, 500, 502, 800, 1000, 1004, 1255, 1600, 2000, 2008, 2510, 4000, 4016, 5020, 6275, 8000, 8032, 10040, 12550, 16064, 20080, 25100, 31375, 40160, 50200, 62750, 80320, 100400, 125500, 200800, 251000, 401600, 502000, 1004000, 2008000]

約数ペア:

[(1, 2008000), (2, 1004000), (4, 502000), (5, 401600), (8, 251000), (10, 200800), (16, 125500), (20, 100400), (25, 80320), (32, 62750), (40, 50200), (50, 40160), (64, 31375), (80, 25100), (100, 20080), (125, 16064), (160, 12550), (200, 10040), (250, 8032), (251, 8000), (320, 6275), (400, 5020), (500, 4016), (502, 4000), (800, 2510), (1000, 2008), (1004, 2000), (1255, 1600)]