28688727

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 42219520

約数和(自身を除く): 13530793

約数列:

[1, 3, 19, 37, 57, 61, 111, 183, 223, 669, 703, 1159, 2109, 2257, 3477, 4237, 6771, 8251, 12711, 13603, 24753, 40809, 42883, 128649, 156769, 258457, 470307, 503311, 775371, 1509933, 9562909, 28688727]

約数ペア:

[(1, 28688727), (3, 9562909), (19, 1509933), (37, 775371), (57, 503311), (61, 470307), (111, 258457), (183, 156769), (223, 128649), (669, 42883), (703, 40809), (1159, 24753), (2109, 13603), (2257, 12711), (3477, 8251), (4237, 6771)]