21157280

素因数分解:

$2^5\times 5^1\times {\mathrm{132233}}^1$

素因数の和:132248

約数の個数: 24

約数和(自身を含む): 49984452

約数和(自身を除く): 28827172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132233, 264466, 528932, 661165, 1057864, 1322330, 2115728, 2644660, 4231456, 5289320, 10578640, 21157280]

約数ペア:

[(1, 21157280), (2, 10578640), (4, 5289320), (5, 4231456), (8, 2644660), (10, 2115728), (16, 1322330), (20, 1057864), (32, 661165), (40, 528932), (80, 264466), (160, 132233)]