204800

素因数分解:

$2^{13}\times 5^2$

素因数の和:36

約数の個数: 42

約数和(自身を含む): 507873

約数和(自身を除く): 303073

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 2048, 2560, 3200, 4096, 5120, 6400, 8192, 10240, 12800, 20480, 25600, 40960, 51200, 102400, 204800]

約数ペア:

[(1, 204800), (2, 102400), (4, 51200), (5, 40960), (8, 25600), (10, 20480), (16, 12800), (20, 10240), (25, 8192), (32, 6400), (40, 5120), (50, 4096), (64, 3200), (80, 2560), (100, 2048), (128, 1600), (160, 1280), (200, 1024), (256, 800), (320, 640), (400, 512)]