20989184

素因数分解:

$2^8\times {\mathrm{163}}^1\times {\mathrm{503}}^1$

素因数の和:682

約数の個数: 36

約数和(自身を含む): 42237216

約数和(自身を除く): 21248032

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 163, 256, 326, 503, 652, 1006, 1304, 2012, 2608, 4024, 5216, 8048, 10432, 16096, 20864, 32192, 41728, 64384, 81989, 128768, 163978, 327956, 655912, 1311824, 2623648, 5247296, 10494592, 20989184]

約数ペア:

[(1, 20989184), (2, 10494592), (4, 5247296), (8, 2623648), (16, 1311824), (32, 655912), (64, 327956), (128, 163978), (163, 128768), (256, 81989), (326, 64384), (503, 41728), (652, 32192), (1006, 20864), (1304, 16096), (2012, 10432), (2608, 8048), (4024, 5216)]