19709459

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 6832621

約数列:

[1, 7, 11, 23, 31, 77, 161, 217, 253, 341, 359, 713, 1771, 2387, 2513, 3949, 4991, 7843, 8257, 11129, 27643, 54901, 57799, 77903, 90827, 122419, 255967, 635789, 856933, 1791769, 2815637, 19709459]

約数ペア:

[(1, 19709459), (7, 2815637), (11, 1791769), (23, 856933), (31, 635789), (77, 255967), (161, 122419), (217, 90827), (253, 77903), (341, 57799), (359, 54901), (713, 27643), (1771, 11129), (2387, 8257), (2513, 7843), (3949, 4991)]