21251344

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10139}}^1$

素因数の和:10278

約数の個数: 20

約数和(自身を含む): 41492880

約数和(自身を除く): 20241536

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10139, 20278, 40556, 81112, 162224, 1328209, 2656418, 5312836, 10625672, 21251344]

約数ペア:

[(1, 21251344), (2, 10625672), (4, 5312836), (8, 2656418), (16, 1328209), (131, 162224), (262, 81112), (524, 40556), (1048, 20278), (2096, 10139)]