257465979

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21821}}^1$

素因数の和:21872

約数の個数: 32

約数和(自身を含む): 418982400

約数和(自身を除く): 161516421

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 171, 207, 437, 513, 621, 1311, 3933, 11799, 21821, 65463, 196389, 414599, 501883, 589167, 1243797, 1505649, 3731391, 4516947, 9535777, 11194173, 13550841, 28607331, 85821993, 257465979]

約数ペア:

[(1, 257465979), (3, 85821993), (9, 28607331), (19, 13550841), (23, 11194173), (27, 9535777), (57, 4516947), (69, 3731391), (171, 1505649), (207, 1243797), (437, 589167), (513, 501883), (621, 414599), (1311, 196389), (3933, 65463), (11799, 21821)]