80719568

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{25609}}^1$

素因数の和:25814

約数の個数: 20

約数和(自身を含む): 157194180

約数和(自身を除く): 76474612

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 25609, 51218, 102436, 204872, 409744, 5044973, 10089946, 20179892, 40359784, 80719568]

約数ペア:

[(1, 80719568), (2, 40359784), (4, 20179892), (8, 10089946), (16, 5044973), (197, 409744), (394, 204872), (788, 102436), (1576, 51218), (3152, 25609)]