20561272

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{24953}}^1$

素因数の和:25062

約数の個数: 16

約数和(自身を含む): 38928240

約数和(自身を除く): 18366968

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 24953, 49906, 99812, 199624, 2570159, 5140318, 10280636, 20561272]

約数ペア:

[(1, 20561272), (2, 10280636), (4, 5140318), (8, 2570159), (103, 199624), (206, 99812), (412, 49906), (824, 24953)]