21516656

素因数分解:

$2^4\times 7^1\times {\mathrm{192113}}^1$

素因数の和:192128

約数の個数: 20

約数和(自身を含む): 47644272

約数和(自身を除く): 26127616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 192113, 384226, 768452, 1344791, 1536904, 2689582, 3073808, 5379164, 10758328, 21516656]

約数ペア:

[(1, 21516656), (2, 10758328), (4, 5379164), (7, 3073808), (8, 2689582), (14, 1536904), (16, 1344791), (28, 768452), (56, 384226), (112, 192113)]