20667305

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{991}}^1$

素因数の和:1136

約数の個数: 16

約数和(自身を含む): 25665024

約数和(自身を除く): 4997719

約数列:

[1, 5, 43, 97, 215, 485, 991, 4171, 4955, 20855, 42613, 96127, 213065, 480635, 4133461, 20667305]

約数ペア:

[(1, 20667305), (5, 4133461), (43, 480635), (97, 213065), (215, 96127), (485, 42613), (991, 20855), (4171, 4955)]