3200000

素因数分解:

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

素因数の和:45

約数の個数: 66

約数和(自身を含む): 7995582

約数和(自身を除く): 4795582

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, 2500, 2560, 3125, 3200, 4000, 5000, 5120, 6250, 6400, 8000, 10000, 12500, 12800, 16000, 20000, 25000, 25600, 32000, 40000, 50000, 64000, 80000, 100000, 128000, 160000, 200000, 320000, 400000, 640000, 800000, 1600000, 3200000]

約数ペア:

[(1, 3200000), (2, 1600000), (4, 800000), (5, 640000), (8, 400000), (10, 320000), (16, 200000), (20, 160000), (25, 128000), (32, 100000), (40, 80000), (50, 64000), (64, 50000), (80, 40000), (100, 32000), (125, 25600), (128, 25000), (160, 20000), (200, 16000), (250, 12800), (256, 12500), (320, 10000), (400, 8000), (500, 6400), (512, 6250), (625, 5120), (640, 5000), (800, 4000), (1000, 3200), (1024, 3125), (1250, 2560), (1280, 2500), (1600, 2000)]