19915245

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3719}}^1$

素因数の和:3754

約数の個数: 48

約数和(自身を含む): 41783040

約数和(自身を除く): 21867795

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3719, 5355, 11157, 18595, 26033, 33471, 55785, 63223, 78099, 130165, 167355, 189669, 234297, 316115, 390495, 442561, 569007, 948345, 1171485, 1327683, 2212805, 2845035, 3983049, 6638415, 19915245]

約数ペア:

[(1, 19915245), (3, 6638415), (5, 3983049), (7, 2845035), (9, 2212805), (15, 1327683), (17, 1171485), (21, 948345), (35, 569007), (45, 442561), (51, 390495), (63, 316115), (85, 234297), (105, 189669), (119, 167355), (153, 130165), (255, 78099), (315, 63223), (357, 55785), (595, 33471), (765, 26033), (1071, 18595), (1785, 11157), (3719, 5355)]