2840747

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:123

約数の個数: 32

約数和(自身を含む): 3870720

約数和(自身を除く): 1029973

約数列:

[1, 7, 13, 19, 31, 53, 91, 133, 217, 247, 371, 403, 589, 689, 1007, 1643, 1729, 2821, 4123, 4823, 7049, 7657, 11501, 13091, 21359, 31217, 53599, 91637, 149513, 218519, 405821, 2840747]

約数ペア:

[(1, 2840747), (7, 405821), (13, 218519), (19, 149513), (31, 91637), (53, 53599), (91, 31217), (133, 21359), (217, 13091), (247, 11501), (371, 7657), (403, 7049), (589, 4823), (689, 4123), (1007, 2821), (1643, 1729)]