128000

素因数分解:

$2^{10}\times 5^3$

素因数の和:35

約数の個数: 44

約数和(自身を含む): 319332

約数和(自身を除く): 191332

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, 640, 800, 1000, 1024, 1280, 1600, 2000, 2560, 3200, 4000, 5120, 6400, 8000, 12800, 16000, 25600, 32000, 64000, 128000]

約数ペア:

[(1, 128000), (2, 64000), (4, 32000), (5, 25600), (8, 16000), (10, 12800), (16, 8000), (20, 6400), (25, 5120), (32, 4000), (40, 3200), (50, 2560), (64, 2000), (80, 1600), (100, 1280), (125, 1024), (128, 1000), (160, 800), (200, 640), (250, 512), (256, 500), (320, 400)]