21496556

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{337}}^1\times {\mathrm{431}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 38840256

約数和(自身を除く): 17343700

約数列:

[1, 2, 4, 37, 74, 148, 337, 431, 674, 862, 1348, 1724, 12469, 15947, 24938, 31894, 49876, 63788, 145247, 290494, 580988, 5374139, 10748278, 21496556]

約数ペア:

[(1, 21496556), (2, 10748278), (4, 5374139), (37, 580988), (74, 290494), (148, 145247), (337, 63788), (431, 49876), (674, 31894), (862, 24938), (1348, 15947), (1724, 12469)]