21755992

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{6991}}^1$

素因数の和:7386

約数の個数: 16

約数和(自身を含む): 40903200

約数和(自身を除く): 19147208

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 6991, 13982, 27964, 55928, 2719499, 5438998, 10877996, 21755992]

約数ペア:

[(1, 21755992), (2, 10877996), (4, 5438998), (8, 2719499), (389, 55928), (778, 27964), (1556, 13982), (3112, 6991)]