20345185

素因数分解:

$5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{4243}}^1$

素因数の和:4392

約数の個数: 16

約数和(自身を含む): 28112256

約数和(自身を除く): 7767071

約数列:

[1, 5, 7, 35, 137, 685, 959, 4243, 4795, 21215, 29701, 148505, 581291, 2906455, 4069037, 20345185]

約数ペア:

[(1, 20345185), (5, 4069037), (7, 2906455), (35, 581291), (137, 148505), (685, 29701), (959, 21215), (4243, 4795)]