21257728

素因数分解:

$2^9\times {\mathrm{41519}}^1$

素因数の和:41537

約数の個数: 20

約数和(自身を含む): 42474960

約数和(自身を除く): 21217232

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 41519, 83038, 166076, 332152, 664304, 1328608, 2657216, 5314432, 10628864, 21257728]

約数ペア:

[(1, 21257728), (2, 10628864), (4, 5314432), (8, 2657216), (16, 1328608), (32, 664304), (64, 332152), (128, 166076), (256, 83038), (512, 41519)]