100720000

素因数分解:

$2^7\times 5^4\times {\mathrm{1259}}^1$

素因数の和:1293

約数の個数: 80

約数和(自身を含む): 250935300

約数和(自身を除く): 150215300

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, 625, 640, 800, 1000, 1250, 1259, 1600, 2000, 2500, 2518, 3200, 4000, 5000, 5036, 6295, 8000, 10000, 10072, 12590, 16000, 20000, 20144, 25180, 31475, 40000, 40288, 50360, 62950, 80000, 80576, 100720, 125900, 157375, 161152, 201440, 251800, 314750, 402880, 503600, 629500, 786875, 805760, 1007200, 1259000, 1573750, 2014400, 2518000, 3147500, 4028800, 5036000, 6295000, 10072000, 12590000, 20144000, 25180000, 50360000, 100720000]

約数ペア:

[(1, 100720000), (2, 50360000), (4, 25180000), (5, 20144000), (8, 12590000), (10, 10072000), (16, 6295000), (20, 5036000), (25, 4028800), (32, 3147500), (40, 2518000), (50, 2014400), (64, 1573750), (80, 1259000), (100, 1007200), (125, 805760), (128, 786875), (160, 629500), (200, 503600), (250, 402880), (320, 314750), (400, 251800), (500, 201440), (625, 161152), (640, 157375), (800, 125900), (1000, 100720), (1250, 80576), (1259, 80000), (1600, 62950), (2000, 50360), (2500, 40288), (2518, 40000), (3200, 31475), (4000, 25180), (5000, 20144), (5036, 20000), (6295, 16000), (8000, 12590), (10000, 10072)]