21979149

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{2543}}^1$

素因数の和:2656

約数の個数: 16

約数和(自身を含む): 30446592

約数和(自身を除く): 8467443

約数列:

[1, 3, 43, 67, 129, 201, 2543, 2881, 7629, 8643, 109349, 170381, 328047, 511143, 7326383, 21979149]

約数ペア:

[(1, 21979149), (3, 7326383), (43, 511143), (67, 328047), (129, 170381), (201, 109349), (2543, 8643), (2881, 7629)]