81070405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{3701}}^1$

素因数の和:4056

約数の個数: 16

約数和(自身を含む): 105107184

約数和(自身を除く): 24036779

約数列:

[1, 5, 13, 65, 337, 1685, 3701, 4381, 18505, 21905, 48113, 240565, 1247237, 6236185, 16214081, 81070405]

約数ペア:

[(1, 81070405), (5, 16214081), (13, 6236185), (65, 1247237), (337, 240565), (1685, 48113), (3701, 21905), (4381, 18505)]