1123840

素因数分解:

$2^9\times 5^1\times {\mathrm{439}}^1$

素因数の和:462

約数の個数: 40

約数和(自身を含む): 2700720

約数和(自身を除く): 1576880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 439, 512, 640, 878, 1280, 1756, 2195, 2560, 3512, 4390, 7024, 8780, 14048, 17560, 28096, 35120, 56192, 70240, 112384, 140480, 224768, 280960, 561920, 1123840]

約数ペア:

[(1, 1123840), (2, 561920), (4, 280960), (5, 224768), (8, 140480), (10, 112384), (16, 70240), (20, 56192), (32, 35120), (40, 28096), (64, 17560), (80, 14048), (128, 8780), (160, 7024), (256, 4390), (320, 3512), (439, 2560), (512, 2195), (640, 1756), (878, 1280)]