12872020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{91943}}^1$

素因数の和:91959

約数の個数: 24

約数和(自身を含む): 30893184

約数和(自身を除く): 18021164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 91943, 183886, 367772, 459715, 643601, 919430, 1287202, 1838860, 2574404, 3218005, 6436010, 12872020]

約数ペア:

[(1, 12872020), (2, 6436010), (4, 3218005), (5, 2574404), (7, 1838860), (10, 1287202), (14, 919430), (20, 643601), (28, 459715), (35, 367772), (70, 183886), (140, 91943)]