21520016

素因数分解:

$2^4\times 7^2\times {\mathrm{27449}}^1$

素因数の和:27471

約数の個数: 30

約数和(自身を含む): 48504150

約数和(自身を除く): 26984134

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 27449, 54898, 109796, 192143, 219592, 384286, 439184, 768572, 1345001, 1537144, 2690002, 3074288, 5380004, 10760008, 21520016]

約数ペア:

[(1, 21520016), (2, 10760008), (4, 5380004), (7, 3074288), (8, 2690002), (14, 1537144), (16, 1345001), (28, 768572), (49, 439184), (56, 384286), (98, 219592), (112, 192143), (196, 109796), (392, 54898), (784, 27449)]