12876800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{503}}^1$

素因数の和:533

約数の個数: 66

約数和(自身を含む): 31982328

約数和(自身を除く): 19105528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 503, 512, 640, 800, 1006, 1024, 1280, 1600, 2012, 2515, 2560, 3200, 4024, 5030, 5120, 6400, 8048, 10060, 12575, 12800, 16096, 20120, 25150, 25600, 32192, 40240, 50300, 64384, 80480, 100600, 128768, 160960, 201200, 257536, 321920, 402400, 515072, 643840, 804800, 1287680, 1609600, 2575360, 3219200, 6438400, 12876800]

約数ペア:

[(1, 12876800), (2, 6438400), (4, 3219200), (5, 2575360), (8, 1609600), (10, 1287680), (16, 804800), (20, 643840), (25, 515072), (32, 402400), (40, 321920), (50, 257536), (64, 201200), (80, 160960), (100, 128768), (128, 100600), (160, 80480), (200, 64384), (256, 50300), (320, 40240), (400, 32192), (503, 25600), (512, 25150), (640, 20120), (800, 16096), (1006, 12800), (1024, 12575), (1280, 10060), (1600, 8048), (2012, 6400), (2515, 5120), (2560, 5030), (3200, 4024)]