20690888

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{83431}}^1$

素因数の和:83468

約数の個数: 16

約数和(自身を含む): 40047360

約数和(自身を除く): 19356472

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 83431, 166862, 333724, 667448, 2586361, 5172722, 10345444, 20690888]

約数ペア:

[(1, 20690888), (2, 10345444), (4, 5172722), (8, 2586361), (31, 667448), (62, 333724), (124, 166862), (248, 83431)]