51490405

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1\times {\mathrm{421}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 63107568

約数和(自身を除く): 11617163

約数列:

[1, 5, 61, 305, 401, 421, 2005, 2105, 24461, 25681, 122305, 128405, 168821, 844105, 10298081, 51490405]

約数ペア:

[(1, 51490405), (5, 10298081), (61, 844105), (305, 168821), (401, 128405), (421, 122305), (2005, 25681), (2105, 24461)]