2691281920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{525641}}^1$

素因数の和:525666

約数の個数: 44

約数和(自身を含む): 6455935044

約数和(自身を除く): 3764653124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 525641, 1051282, 2102564, 2628205, 4205128, 5256410, 8410256, 10512820, 16820512, 21025640, 33641024, 42051280, 67282048, 84102560, 134564096, 168205120, 269128192, 336410240, 538256384, 672820480, 1345640960, 2691281920]

約数ペア:

[(1, 2691281920), (2, 1345640960), (4, 672820480), (5, 538256384), (8, 336410240), (10, 269128192), (16, 168205120), (20, 134564096), (32, 84102560), (40, 67282048), (64, 42051280), (80, 33641024), (128, 21025640), (160, 16820512), (256, 10512820), (320, 8410256), (512, 5256410), (640, 4205128), (1024, 2628205), (1280, 2102564), (2560, 1051282), (5120, 525641)]