20478459

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1217}}^1$

素因数の和:1370

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 7584261

約数列:

[1, 3, 71, 79, 213, 237, 1217, 3651, 5609, 16827, 86407, 96143, 259221, 288429, 6826153, 20478459]

約数ペア:

[(1, 20478459), (3, 6826153), (71, 288429), (79, 259221), (213, 96143), (237, 86407), (1217, 16827), (3651, 5609)]