8990720

素因数分解:

$2^{12}\times 5^1\times {\mathrm{439}}^1$

素因数の和:468

約数の個数: 52

約数和(自身を含む): 21624240

約数和(自身を除く): 12633520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 439, 512, 640, 878, 1024, 1280, 1756, 2048, 2195, 2560, 3512, 4096, 4390, 5120, 7024, 8780, 10240, 14048, 17560, 20480, 28096, 35120, 56192, 70240, 112384, 140480, 224768, 280960, 449536, 561920, 899072, 1123840, 1798144, 2247680, 4495360, 8990720]

約数ペア:

[(1, 8990720), (2, 4495360), (4, 2247680), (5, 1798144), (8, 1123840), (10, 899072), (16, 561920), (20, 449536), (32, 280960), (40, 224768), (64, 140480), (80, 112384), (128, 70240), (160, 56192), (256, 35120), (320, 28096), (439, 20480), (512, 17560), (640, 14048), (878, 10240), (1024, 8780), (1280, 7024), (1756, 5120), (2048, 4390), (2195, 4096), (2560, 3512)]