720160889

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{639007}}^1$

素因数の和:639044

約数の個数: 12

約数和(自身を含む): 874162944

約数和(自身を除く): 154002055

約数列:

[1, 7, 23, 49, 161, 1127, 639007, 4473049, 14697161, 31311343, 102880127, 720160889]

約数ペア:

[(1, 720160889), (7, 102880127), (23, 31311343), (49, 14697161), (161, 4473049), (1127, 639007)]