21571072

素因数分解:

$2^9\times {\mathrm{42131}}^1$

素因数の和:42149

約数の個数: 20

約数和(自身を含む): 43101036

約数和(自身を除く): 21529964

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 42131, 84262, 168524, 337048, 674096, 1348192, 2696384, 5392768, 10785536, 21571072]

約数ペア:

[(1, 21571072), (2, 10785536), (4, 5392768), (8, 2696384), (16, 1348192), (32, 674096), (64, 337048), (128, 168524), (256, 84262), (512, 42131)]