21067840

素因数分解:

$2^6\times 5^1\times {\mathrm{65837}}^1$

素因数の和:65854

約数の個数: 28

約数和(自身を含む): 50168556

約数和(自身を除く): 29100716

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65837, 131674, 263348, 329185, 526696, 658370, 1053392, 1316740, 2106784, 2633480, 4213568, 5266960, 10533920, 21067840]

約数ペア:

[(1, 21067840), (2, 10533920), (4, 5266960), (5, 4213568), (8, 2633480), (10, 2106784), (16, 1316740), (20, 1053392), (32, 658370), (40, 526696), (64, 329185), (80, 263348), (160, 131674), (320, 65837)]