25999280

素因数分解:

$2^4\times 5^1\times {\mathrm{324991}}^1$

素因数の和:325004

約数の個数: 20

約数和(自身を含む): 60448512

約数和(自身を除く): 34449232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 324991, 649982, 1299964, 1624955, 2599928, 3249910, 5199856, 6499820, 12999640, 25999280]

約数ペア:

[(1, 25999280), (2, 12999640), (4, 6499820), (5, 5199856), (8, 3249910), (10, 2599928), (16, 1624955), (20, 1299964), (40, 649982), (80, 324991)]