639865136

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{373753}}^1$

素因数の和:373868

約数の個数: 20

約数和(自身を含む): 1251328392

約数和(自身を除く): 611463256

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 373753, 747506, 1495012, 2990024, 5980048, 39991571, 79983142, 159966284, 319932568, 639865136]

約数ペア:

[(1, 639865136), (2, 319932568), (4, 159966284), (8, 79983142), (16, 39991571), (107, 5980048), (214, 2990024), (428, 1495012), (856, 747506), (1712, 373753)]