20521172

素因数分解:

$2^2\times 7^1\times {\mathrm{367}}^1\times {\mathrm{1997}}^1$

素因数の和:2375

約数の個数: 24

約数和(自身を含む): 41174784

約数和(自身を除く): 20653612

約数列:

[1, 2, 4, 7, 14, 28, 367, 734, 1468, 1997, 2569, 3994, 5138, 7988, 10276, 13979, 27958, 55916, 732899, 1465798, 2931596, 5130293, 10260586, 20521172]

約数ペア:

[(1, 20521172), (2, 10260586), (4, 5130293), (7, 2931596), (14, 1465798), (28, 732899), (367, 55916), (734, 27958), (1468, 13979), (1997, 10276), (2569, 7988), (3994, 5138)]