21000742016

素因数分解:

$2^7\times {\mathrm{157}}^1\times {\mathrm{1045021}}^1$

素因数の和:1045192

約数の個数: 32

約数和(自身を含む): 42103936380

約数和(自身を除く): 21103194364

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 314, 628, 1256, 2512, 5024, 10048, 20096, 1045021, 2090042, 4180084, 8360168, 16720336, 33440672, 66881344, 133762688, 164068297, 328136594, 656273188, 1312546376, 2625092752, 5250185504, 10500371008, 21000742016]

約数ペア:

[(1, 21000742016), (2, 10500371008), (4, 5250185504), (8, 2625092752), (16, 1312546376), (32, 656273188), (64, 328136594), (128, 164068297), (157, 133762688), (314, 66881344), (628, 33440672), (1256, 16720336), (2512, 8360168), (5024, 4180084), (10048, 2090042), (20096, 1045021)]