21145856

素因数分解:

$2^8\times {\mathrm{82601}}^1$

素因数の和:82617

約数の個数: 18

約数和(自身を含む): 42209622

約数和(自身を除く): 21063766

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 82601, 165202, 330404, 660808, 1321616, 2643232, 5286464, 10572928, 21145856]

約数ペア:

[(1, 21145856), (2, 10572928), (4, 5286464), (8, 2643232), (16, 1321616), (32, 660808), (64, 330404), (128, 165202), (256, 82601)]