8000

素因数分解:

$2^6\times 5^3$

素因数の和:27

約数の個数: 28

約数和(自身を含む): 19812

約数和(自身を除く): 11812

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]

約数ペア:

[(1, 8000), (2, 4000), (4, 2000), (5, 1600), (8, 1000), (10, 800), (16, 500), (20, 400), (25, 320), (32, 250), (40, 200), (50, 160), (64, 125), (80, 100)]