1255000

素因数分解:

$2^3\times 5^4\times {\mathrm{251}}^1$

素因数の和:277

約数の個数: 40

約数和(自身を含む): 2952180

約数和(自身を除く): 1697180

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 251, 500, 502, 625, 1000, 1004, 1250, 1255, 2008, 2500, 2510, 5000, 5020, 6275, 10040, 12550, 25100, 31375, 50200, 62750, 125500, 156875, 251000, 313750, 627500, 1255000]

約数ペア:

[(1, 1255000), (2, 627500), (4, 313750), (5, 251000), (8, 156875), (10, 125500), (20, 62750), (25, 50200), (40, 31375), (50, 25100), (100, 12550), (125, 10040), (200, 6275), (250, 5020), (251, 5000), (500, 2510), (502, 2500), (625, 2008), (1000, 1255), (1004, 1250)]