18966689

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:440

約数の個数: 16

約数和(自身を含む): 22162560

約数和(自身を除く): 3195871

約数列:

[1, 7, 101, 139, 193, 707, 973, 1351, 14039, 19493, 26827, 98273, 136451, 187789, 2709527, 18966689]

約数ペア:

[(1, 18966689), (7, 2709527), (101, 187789), (139, 136451), (193, 98273), (707, 26827), (973, 19493), (1351, 14039)]