80000

素因数分解:

$2^7\times 5^4$

素因数の和:34

約数の個数: 40

約数和(自身を含む): 199155

約数和(自身を除く): 119155

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 8000, 10000, 16000, 20000, 40000, 80000]

約数ペア:

[(1, 80000), (2, 40000), (4, 20000), (5, 16000), (8, 10000), (10, 8000), (16, 5000), (20, 4000), (25, 3200), (32, 2500), (40, 2000), (50, 1600), (64, 1250), (80, 1000), (100, 800), (125, 640), (128, 625), (160, 500), (200, 400), (250, 320)]