21020408

素因数分解:

$2^3\times {\mathrm{151}}^1\times {\mathrm{17401}}^1$

素因数の和:17558

約数の個数: 16

約数和(自身を含む): 39676560

約数和(自身を除く): 18656152

約数列:

[1, 2, 4, 8, 151, 302, 604, 1208, 17401, 34802, 69604, 139208, 2627551, 5255102, 10510204, 21020408]

約数ペア:

[(1, 21020408), (2, 10510204), (4, 5255102), (8, 2627551), (151, 139208), (302, 69604), (604, 34802), (1208, 17401)]