81393116

素因数分解:

$2^2\times 7^2\times {\mathrm{415271}}^1$

素因数の和:415289

約数の個数: 18

約数和(自身を含む): 165693528

約数和(自身を除く): 84300412

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 415271, 830542, 1661084, 2906897, 5813794, 11627588, 20348279, 40696558, 81393116]

約数ペア:

[(1, 81393116), (2, 40696558), (4, 20348279), (7, 11627588), (14, 5813794), (28, 2906897), (49, 1661084), (98, 830542), (196, 415271)]