72640820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{518863}}^1$

素因数の和:518879

約数の個数: 24

約数和(自身を含む): 174338304

約数和(自身を除く): 101697484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 518863, 1037726, 2075452, 2594315, 3632041, 5188630, 7264082, 10377260, 14528164, 18160205, 36320410, 72640820]

約数ペア:

[(1, 72640820), (2, 36320410), (4, 18160205), (5, 14528164), (7, 10377260), (10, 7264082), (14, 5188630), (20, 3632041), (28, 2594315), (35, 2075452), (70, 1037726), (140, 518863)]