21785004

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{4691}}^1$

素因数の和:4747

約数の個数: 48

約数和(自身を含む): 57805440

約数和(自身を除く): 36020436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 86, 108, 129, 172, 258, 387, 516, 774, 1161, 1548, 2322, 4644, 4691, 9382, 14073, 18764, 28146, 42219, 56292, 84438, 126657, 168876, 201713, 253314, 403426, 506628, 605139, 806852, 1210278, 1815417, 2420556, 3630834, 5446251, 7261668, 10892502, 21785004]

約数ペア:

[(1, 21785004), (2, 10892502), (3, 7261668), (4, 5446251), (6, 3630834), (9, 2420556), (12, 1815417), (18, 1210278), (27, 806852), (36, 605139), (43, 506628), (54, 403426), (86, 253314), (108, 201713), (129, 168876), (172, 126657), (258, 84438), (387, 56292), (516, 42219), (774, 28146), (1161, 18764), (1548, 14073), (2322, 9382), (4644, 4691)]