20380885

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{10987}}^1$

素因数の和:11052

約数の個数: 16

約数和(自身を含む): 28480896

約数和(自身を除く): 8100011

約数列:

[1, 5, 7, 35, 53, 265, 371, 1855, 10987, 54935, 76909, 384545, 582311, 2911555, 4076177, 20380885]

約数ペア:

[(1, 20380885), (5, 4076177), (7, 2911555), (35, 582311), (53, 384545), (265, 76909), (371, 54935), (1855, 10987)]