21381616

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{28433}}^1$

素因数の和:28488

約数の個数: 20

約数和(自身を含む): 42309792

約数和(自身を除く): 20928176

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 28433, 56866, 113732, 227464, 454928, 1336351, 2672702, 5345404, 10690808, 21381616]

約数ペア:

[(1, 21381616), (2, 10690808), (4, 5345404), (8, 2672702), (16, 1336351), (47, 454928), (94, 227464), (188, 113732), (376, 56866), (752, 28433)]