20988104

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25471}}^1$

素因数の和:25580

約数の個数: 16

約数和(自身を含む): 39736320

約数和(自身を除く): 18748216

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25471, 50942, 101884, 203768, 2623513, 5247026, 10494052, 20988104]

約数ペア:

[(1, 20988104), (2, 10494052), (4, 5247026), (8, 2623513), (103, 203768), (206, 101884), (412, 50942), (824, 25471)]