20992454

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78919}}^1$

素因数の和:78947

約数の個数: 16

約数和(自身を含む): 37881600

約数和(自身を除く): 16889146

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78919, 157838, 552433, 1104866, 1499461, 2998922, 10496227, 20992454]

約数ペア:

[(1, 20992454), (2, 10496227), (7, 2998922), (14, 1499461), (19, 1104866), (38, 552433), (133, 157838), (266, 78919)]