20591129

素因数分解:

${\mathrm{13}}^2\times {\mathrm{37}}^2\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 18

約数和(自身を含む): 23173290

約数和(自身を除く): 2582161

約数列:

[1, 13, 37, 89, 169, 481, 1157, 1369, 3293, 6253, 15041, 17797, 42809, 121841, 231361, 556517, 1583933, 20591129]

約数ペア:

[(1, 20591129), (13, 1583933), (37, 556517), (89, 231361), (169, 121841), (481, 42809), (1157, 17797), (1369, 15041), (3293, 6253)]