21181284

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{4561}}^1$

素因数の和:4617

約数の個数: 48

約数和(自身を含む): 56203840

約数和(自身を除く): 35022556

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, 4561, 4644, 9122, 13683, 18244, 27366, 41049, 54732, 82098, 123147, 164196, 196123, 246294, 392246, 492588, 588369, 784492, 1176738, 1765107, 2353476, 3530214, 5295321, 7060428, 10590642, 21181284]

約数ペア:

[(1, 21181284), (2, 10590642), (3, 7060428), (4, 5295321), (6, 3530214), (9, 2353476), (12, 1765107), (18, 1176738), (27, 784492), (36, 588369), (43, 492588), (54, 392246), (86, 246294), (108, 196123), (129, 164196), (172, 123147), (258, 82098), (387, 54732), (516, 41049), (774, 27366), (1161, 18244), (1548, 13683), (2322, 9122), (4561, 4644)]