247487919

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{4493}}^1$

素因数の和:4607

約数の個数: 32

約数和(自身を含む): 392308224

約数和(自身を除く): 144820305

約数列:

[1, 3, 7, 21, 43, 61, 129, 183, 301, 427, 903, 1281, 2623, 4493, 7869, 13479, 18361, 31451, 55083, 94353, 193199, 274073, 579597, 822219, 1352393, 1918511, 4057179, 5755533, 11785139, 35355417, 82495973, 247487919]

約数ペア:

[(1, 247487919), (3, 82495973), (7, 35355417), (21, 11785139), (43, 5755533), (61, 4057179), (129, 1918511), (183, 1352393), (301, 822219), (427, 579597), (903, 274073), (1281, 193199), (2623, 94353), (4493, 55083), (7869, 31451), (13479, 18361)]