20689912

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{63079}}^1$

素因数の和:63126

約数の個数: 16

約数和(自身を含む): 39740400

約数和(自身を除く): 19050488

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 63079, 126158, 252316, 504632, 2586239, 5172478, 10344956, 20689912]

約数ペア:

[(1, 20689912), (2, 10344956), (4, 5172478), (8, 2586239), (41, 504632), (82, 252316), (164, 126158), (328, 63079)]