21116912

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{28081}}^1$

素因数の和:28136

約数の個数: 20

約数和(自身を含む): 41786016

約数和(自身を除く): 20669104

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 28081, 56162, 112324, 224648, 449296, 1319807, 2639614, 5279228, 10558456, 21116912]

約数ペア:

[(1, 21116912), (2, 10558456), (4, 5279228), (8, 2639614), (16, 1319807), (47, 449296), (94, 224648), (188, 112324), (376, 56162), (752, 28081)]