21209542

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{2389}}^1$

素因数の和:2607

約数の個数: 16

約数和(自身を含む): 33383520

約数和(自身を除く): 12173978

約数列:

[1, 2, 23, 46, 193, 386, 2389, 4439, 4778, 8878, 54947, 109894, 461077, 922154, 10604771, 21209542]

約数ペア:

[(1, 21209542), (2, 10604771), (23, 922154), (46, 461077), (193, 109894), (386, 54947), (2389, 8878), (4439, 4778)]