87257680

素因数分解:

$2^4\times 5^1\times {\mathrm{1090721}}^1$

素因数の和:1090734

約数の個数: 20

約数和(自身を含む): 202874292

約数和(自身を除く): 115616612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1090721, 2181442, 4362884, 5453605, 8725768, 10907210, 17451536, 21814420, 43628840, 87257680]

約数ペア:

[(1, 87257680), (2, 43628840), (4, 21814420), (5, 17451536), (8, 10907210), (10, 8725768), (16, 5453605), (20, 4362884), (40, 2181442), (80, 1090721)]