21580295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 30170880

約数和(自身を除く): 8590585

約数列:

[1, 5, 11, 19, 55, 95, 107, 193, 209, 535, 965, 1045, 1177, 2033, 2123, 3667, 5885, 10165, 10615, 18335, 20651, 22363, 40337, 103255, 111815, 201685, 227161, 392369, 1135805, 1961845, 4316059, 21580295]

約数ペア:

[(1, 21580295), (5, 4316059), (11, 1961845), (19, 1135805), (55, 392369), (95, 227161), (107, 201685), (193, 111815), (209, 103255), (535, 40337), (965, 22363), (1045, 20651), (1177, 18335), (2033, 10615), (2123, 10165), (3667, 5885)]