320167981

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 395366400

約数和(自身を除く): 75198419

約数列:

[1, 7, 23, 43, 103, 161, 301, 449, 721, 989, 2369, 3143, 4429, 6923, 10327, 16583, 19307, 31003, 46247, 72289, 101867, 135149, 323729, 444061, 713069, 1063681, 1988621, 3108427, 7445767, 13920347, 45738283, 320167981]

約数ペア:

[(1, 320167981), (7, 45738283), (23, 13920347), (43, 7445767), (103, 3108427), (161, 1988621), (301, 1063681), (449, 713069), (721, 444061), (989, 323729), (2369, 135149), (3143, 101867), (4429, 72289), (6923, 46247), (10327, 31003), (16583, 19307)]