20990489648

素因数分解:

$2^4\times {\mathrm{383}}^1\times {\mathrm{3425341}}^1$

素因数の和:3425732

約数の個数: 20

約数和(自身を含む): 40775271168

約数和(自身を除く): 19784781520

約数列:

[1, 2, 4, 8, 16, 383, 766, 1532, 3064, 6128, 3425341, 6850682, 13701364, 27402728, 54805456, 1311905603, 2623811206, 5247622412, 10495244824, 20990489648]

約数ペア:

[(1, 20990489648), (2, 10495244824), (4, 5247622412), (8, 2623811206), (16, 1311905603), (383, 54805456), (766, 27402728), (1532, 13701364), (3064, 6850682), (6128, 3425341)]