20919027

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9539}}^1$

素因数の和:9602

約数の個数: 16

約数和(自身を含む): 30222720

約数和(自身を除く): 9303693

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9539, 28617, 162163, 410177, 486489, 1230531, 6973009, 20919027]

約数ペア:

[(1, 20919027), (3, 6973009), (17, 1230531), (43, 486489), (51, 410177), (129, 162163), (731, 28617), (2193, 9539)]