19493831

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:782

約数の個数: 16

約数和(自身を含む): 22998528

約数和(自身を除く): 3504697

約数列:

[1, 7, 61, 71, 427, 497, 643, 4331, 4501, 30317, 39223, 45653, 274561, 319571, 2784833, 19493831]

約数ペア:

[(1, 19493831), (7, 2784833), (61, 319571), (71, 274561), (427, 45653), (497, 39223), (643, 30317), (4331, 4501)]