39907978

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{4457}}^1$

素因数の和:4518

約数の個数: 24

約数和(自身を含む): 67592196

約数和(自身を除く): 27684218

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 4457, 4477, 8914, 8954, 49027, 98054, 164909, 329818, 539297, 1078594, 1813999, 3627998, 19953989, 39907978]

約数ペア:

[(1, 39907978), (2, 19953989), (11, 3627998), (22, 1813999), (37, 1078594), (74, 539297), (121, 329818), (242, 164909), (407, 98054), (814, 49027), (4457, 8954), (4477, 8914)]