639219

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 992000

約数和(自身を除く): 352781

約数列:

[1, 3, 7, 21, 61, 183, 427, 499, 1281, 1497, 3493, 10479, 30439, 91317, 213073, 639219]

約数ペア:

[(1, 639219), (3, 213073), (7, 91317), (21, 30439), (61, 10479), (183, 3493), (427, 1497), (499, 1281)]