20144000

素因数分解:

$2^7\times 5^3\times {\mathrm{1259}}^1$

素因数の和:1288

約数の個数: 64

約数和(自身を含む): 50122800

約数和(自身を除く): 29978800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1259, 1600, 2000, 2518, 3200, 4000, 5036, 6295, 8000, 10072, 12590, 16000, 20144, 25180, 31475, 40288, 50360, 62950, 80576, 100720, 125900, 157375, 161152, 201440, 251800, 314750, 402880, 503600, 629500, 805760, 1007200, 1259000, 2014400, 2518000, 4028800, 5036000, 10072000, 20144000]

約数ペア:

[(1, 20144000), (2, 10072000), (4, 5036000), (5, 4028800), (8, 2518000), (10, 2014400), (16, 1259000), (20, 1007200), (25, 805760), (32, 629500), (40, 503600), (50, 402880), (64, 314750), (80, 251800), (100, 201440), (125, 161152), (128, 157375), (160, 125900), (200, 100720), (250, 80576), (320, 62950), (400, 50360), (500, 40288), (640, 31475), (800, 25180), (1000, 20144), (1259, 16000), (1600, 12590), (2000, 10072), (2518, 8000), (3200, 6295), (4000, 5036)]