21049856

素因数分解:

$2^9\times {\mathrm{41113}}^1$

素因数の和:41131

約数の個数: 20

約数和(自身を含む): 42059622

約数和(自身を除く): 21009766

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 41113, 82226, 164452, 328904, 657808, 1315616, 2631232, 5262464, 10524928, 21049856]

約数ペア:

[(1, 21049856), (2, 10524928), (4, 5262464), (8, 2631232), (16, 1315616), (32, 657808), (64, 328904), (128, 164452), (256, 82226), (512, 41113)]