320000

素因数分解:

$2^9\times 5^4$

素因数の和:38

約数の個数: 50

約数和(自身を含む): 798963

約数和(自身を除く): 478963

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1250, 1280, 1600, 2000, 2500, 2560, 3200, 4000, 5000, 6400, 8000, 10000, 12800, 16000, 20000, 32000, 40000, 64000, 80000, 160000, 320000]

約数ペア:

[(1, 320000), (2, 160000), (4, 80000), (5, 64000), (8, 40000), (10, 32000), (16, 20000), (20, 16000), (25, 12800), (32, 10000), (40, 8000), (50, 6400), (64, 5000), (80, 4000), (100, 3200), (125, 2560), (128, 2500), (160, 2000), (200, 1600), (250, 1280), (256, 1250), (320, 1000), (400, 800), (500, 640), (512, 625)]