20602880

素因数分解:

$2^{13}\times 5^1\times {\mathrm{503}}^1$

素因数の和:534

約数の個数: 56

約数和(自身を含む): 49542192

約数和(自身を除く): 28939312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 503, 512, 640, 1006, 1024, 1280, 2012, 2048, 2515, 2560, 4024, 4096, 5030, 5120, 8048, 8192, 10060, 10240, 16096, 20120, 20480, 32192, 40240, 40960, 64384, 80480, 128768, 160960, 257536, 321920, 515072, 643840, 1030144, 1287680, 2060288, 2575360, 4120576, 5150720, 10301440, 20602880]

約数ペア:

[(1, 20602880), (2, 10301440), (4, 5150720), (5, 4120576), (8, 2575360), (10, 2060288), (16, 1287680), (20, 1030144), (32, 643840), (40, 515072), (64, 321920), (80, 257536), (128, 160960), (160, 128768), (256, 80480), (320, 64384), (503, 40960), (512, 40240), (640, 32192), (1006, 20480), (1024, 20120), (1280, 16096), (2012, 10240), (2048, 10060), (2515, 8192), (2560, 8048), (4024, 5120), (4096, 5030)]