21389816

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16607}}^1$

素因数の和:16643

約数の個数: 32

約数和(自身を含む): 47831040

約数和(自身を除く): 26441224

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16607, 33214, 66428, 116249, 132856, 232498, 381961, 464996, 763922, 929992, 1527844, 2673727, 3055688, 5347454, 10694908, 21389816]

約数ペア:

[(1, 21389816), (2, 10694908), (4, 5347454), (7, 3055688), (8, 2673727), (14, 1527844), (23, 929992), (28, 763922), (46, 464996), (56, 381961), (92, 232498), (161, 132856), (184, 116249), (322, 66428), (644, 33214), (1288, 16607)]