20689316

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 36879360

約数和(自身を除く): 16190044

約数列:

[1, 2, 4, 127, 139, 254, 278, 293, 508, 556, 586, 1172, 17653, 35306, 37211, 40727, 70612, 74422, 81454, 148844, 162908, 5172329, 10344658, 20689316]

約数ペア:

[(1, 20689316), (2, 10344658), (4, 5172329), (127, 162908), (139, 148844), (254, 81454), (278, 74422), (293, 70612), (508, 40727), (556, 37211), (586, 35306), (1172, 17653)]