28908803

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 37793280

約数和(自身を除く): 8884477

約数列:

[1, 7, 11, 37, 73, 77, 139, 259, 407, 511, 803, 973, 1529, 2701, 2849, 5143, 5621, 10147, 10703, 18907, 29711, 36001, 56573, 71029, 111617, 207977, 375439, 396011, 781319, 2628073, 4129829, 28908803]

約数ペア:

[(1, 28908803), (7, 4129829), (11, 2628073), (37, 781319), (73, 396011), (77, 375439), (139, 207977), (259, 111617), (407, 71029), (511, 56573), (803, 36001), (973, 29711), (1529, 18907), (2701, 10703), (2849, 10147), (5143, 5621)]