21640624

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4349}}^1$

素因数の和:4668

約数の個数: 20

約数和(自身を含む): 42073200

約数和(自身を除く): 20432576

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4349, 4976, 8698, 17396, 34792, 69584, 1352539, 2705078, 5410156, 10820312, 21640624]

約数ペア:

[(1, 21640624), (2, 10820312), (4, 5410156), (8, 2705078), (16, 1352539), (311, 69584), (622, 34792), (1244, 17396), (2488, 8698), (4349, 4976)]