5120000

素因数分解:

$2^{13}\times 5^4$

素因数の和:46

約数の個数: 70

約数和(自身を含む): 12795123

約数和(自身を除く): 7675123

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, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3200, 4000, 4096, 5000, 5120, 6400, 8000, 8192, 10000, 10240, 12800, 16000, 20000, 20480, 25600, 32000, 40000, 40960, 51200, 64000, 80000, 102400, 128000, 160000, 204800, 256000, 320000, 512000, 640000, 1024000, 1280000, 2560000, 5120000]

約数ペア:

[(1, 5120000), (2, 2560000), (4, 1280000), (5, 1024000), (8, 640000), (10, 512000), (16, 320000), (20, 256000), (25, 204800), (32, 160000), (40, 128000), (50, 102400), (64, 80000), (80, 64000), (100, 51200), (125, 40960), (128, 40000), (160, 32000), (200, 25600), (250, 20480), (256, 20000), (320, 16000), (400, 12800), (500, 10240), (512, 10000), (625, 8192), (640, 8000), (800, 6400), (1000, 5120), (1024, 5000), (1250, 4096), (1280, 4000), (1600, 3200), (2000, 2560), (2048, 2500)]