21640136

素因数分解:

$2^3\times 7^1\times {\mathrm{386431}}^1$

素因数の和:386444

約数の個数: 16

約数和(自身を含む): 46371840

約数和(自身を除く): 24731704

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 386431, 772862, 1545724, 2705017, 3091448, 5410034, 10820068, 21640136]

約数ペア:

[(1, 21640136), (2, 10820068), (4, 5410034), (7, 3091448), (8, 2705017), (14, 1545724), (28, 772862), (56, 386431)]