12561920

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{701}}^1$

素因数の和:731

約数の個数: 80

約数和(自身を含む): 34471008

約数和(自身を除く): 21909088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 701, 896, 1120, 1280, 1402, 1792, 2240, 2560, 2804, 3505, 3584, 4480, 4907, 5608, 7010, 8960, 9814, 11216, 14020, 17920, 19628, 22432, 24535, 28040, 39256, 44864, 49070, 56080, 78512, 89728, 98140, 112160, 157024, 179456, 196280, 224320, 314048, 358912, 392560, 448640, 628096, 785120, 897280, 1256192, 1570240, 1794560, 2512384, 3140480, 6280960, 12561920]

約数ペア:

[(1, 12561920), (2, 6280960), (4, 3140480), (5, 2512384), (7, 1794560), (8, 1570240), (10, 1256192), (14, 897280), (16, 785120), (20, 628096), (28, 448640), (32, 392560), (35, 358912), (40, 314048), (56, 224320), (64, 196280), (70, 179456), (80, 157024), (112, 112160), (128, 98140), (140, 89728), (160, 78512), (224, 56080), (256, 49070), (280, 44864), (320, 39256), (448, 28040), (512, 24535), (560, 22432), (640, 19628), (701, 17920), (896, 14020), (1120, 11216), (1280, 9814), (1402, 8960), (1792, 7010), (2240, 5608), (2560, 4907), (2804, 4480), (3505, 3584)]