20919305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{719}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 28667520

約数和(自身を除く): 7748215

約数列:

[1, 5, 11, 23, 55, 115, 253, 529, 719, 1265, 2645, 3595, 5819, 7909, 16537, 29095, 39545, 82685, 181907, 380351, 909535, 1901755, 4183861, 20919305]

約数ペア:

[(1, 20919305), (5, 4183861), (11, 1901755), (23, 909535), (55, 380351), (115, 181907), (253, 82685), (529, 39545), (719, 29095), (1265, 16537), (2645, 7909), (3595, 5819)]