21806504

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{63391}}^1$

素因数の和:63440

約数の個数: 16

約数和(自身を含む): 41838720

約数和(自身を除く): 20032216

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 63391, 126782, 253564, 507128, 2725813, 5451626, 10903252, 21806504]

約数ペア:

[(1, 21806504), (2, 10903252), (4, 5451626), (8, 2725813), (43, 507128), (86, 253564), (172, 126782), (344, 63391)]