19736871

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2051

約数の個数: 32

約数和(自身を含む): 33589248

約数和(自身を除く): 13852377

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 129, 231, 301, 473, 903, 1419, 1987, 3311, 5961, 9933, 13909, 21857, 41727, 65571, 85441, 152999, 256323, 458997, 598087, 939851, 1794261, 2819553, 6578957, 19736871]

約数ペア:

[(1, 19736871), (3, 6578957), (7, 2819553), (11, 1794261), (21, 939851), (33, 598087), (43, 458997), (77, 256323), (129, 152999), (231, 85441), (301, 65571), (473, 41727), (903, 21857), (1419, 13909), (1987, 9933), (3311, 5961)]