19979729

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{829}}^1$

素因数の和:1160

約数の個数: 16

約数和(自身を含む): 25019520

約数和(自身を除く): 5039791

約数列:

[1, 7, 11, 77, 313, 829, 2191, 3443, 5803, 9119, 24101, 63833, 259477, 1816339, 2854247, 19979729]

約数ペア:

[(1, 19979729), (7, 2854247), (11, 1816339), (77, 259477), (313, 63833), (829, 24101), (2191, 9119), (3443, 5803)]