21252904

素因数分解:

$2^3\times {\mathrm{271}}^1\times {\mathrm{9803}}^1$

素因数の和:10080

約数の個数: 16

約数和(自身を含む): 40000320

約数和(自身を除く): 18747416

約数列:

[1, 2, 4, 8, 271, 542, 1084, 2168, 9803, 19606, 39212, 78424, 2656613, 5313226, 10626452, 21252904]

約数ペア:

[(1, 21252904), (2, 10626452), (4, 5313226), (8, 2656613), (271, 78424), (542, 39212), (1084, 19606), (2168, 9803)]