20512338760

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4978723}}^1$

素因数の和:4978837

約数の個数: 32

約数和(自身を含む): 46600856640

約数和(自身を除く): 26088517880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4978723, 9957446, 19914892, 24893615, 39829784, 49787230, 99574460, 199148920, 512808469, 1025616938, 2051233876, 2564042345, 4102467752, 5128084690, 10256169380, 20512338760]

約数ペア:

[(1, 20512338760), (2, 10256169380), (4, 5128084690), (5, 4102467752), (8, 2564042345), (10, 2051233876), (20, 1025616938), (40, 512808469), (103, 199148920), (206, 99574460), (412, 49787230), (515, 39829784), (824, 24893615), (1030, 19914892), (2060, 9957446), (4120, 4978723)]