20155575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2221}}^1$

素因数の和:2256

約数の個数: 36

約数和(自身を含む): 36645224

約数和(自身を除く): 16489649

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2221, 3025, 6663, 9075, 11105, 24431, 33315, 55525, 73293, 122155, 166575, 268741, 366465, 610775, 806223, 1343705, 1832325, 4031115, 6718525, 20155575]

約数ペア:

[(1, 20155575), (3, 6718525), (5, 4031115), (11, 1832325), (15, 1343705), (25, 806223), (33, 610775), (55, 366465), (75, 268741), (121, 166575), (165, 122155), (275, 73293), (363, 55525), (605, 33315), (825, 24431), (1815, 11105), (2221, 9075), (3025, 6663)]