21357568

素因数分解:

$2^{10}\times {\mathrm{20857}}^1$

素因数の和:20877

約数の個数: 22

約数和(自身を含む): 42696326

約数和(自身を除く): 21338758

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 20857, 41714, 83428, 166856, 333712, 667424, 1334848, 2669696, 5339392, 10678784, 21357568]

約数ペア:

[(1, 21357568), (2, 10678784), (4, 5339392), (8, 2669696), (16, 1334848), (32, 667424), (64, 333712), (128, 166856), (256, 83428), (512, 41714), (1024, 20857)]