21004812

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{4523}}^1$

素因数の和:4579

約数の個数: 48

約数和(自身を含む): 55735680

約数和(自身を除く): 34730868

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, 4523, 4644, 9046, 13569, 18092, 27138, 40707, 54276, 81414, 122121, 162828, 194489, 244242, 388978, 488484, 583467, 777956, 1166934, 1750401, 2333868, 3500802, 5251203, 7001604, 10502406, 21004812]

約数ペア:

[(1, 21004812), (2, 10502406), (3, 7001604), (4, 5251203), (6, 3500802), (9, 2333868), (12, 1750401), (18, 1166934), (27, 777956), (36, 583467), (43, 488484), (54, 388978), (86, 244242), (108, 194489), (129, 162828), (172, 122121), (258, 81414), (387, 54276), (516, 40707), (774, 27138), (1161, 18092), (1548, 13569), (2322, 9046), (4523, 4644)]