1990457847

素因数分解:

$3^3\times 7^1\times {\mathrm{10531523}}^1$

素因数の和:10531539

約数の個数: 16

約数和(自身を含む): 3370087680

約数和(自身を除く): 1379629833

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 10531523, 31594569, 73720661, 94783707, 221161983, 284351121, 663485949, 1990457847]

約数ペア:

[(1, 1990457847), (3, 663485949), (7, 284351121), (9, 221161983), (21, 94783707), (27, 73720661), (63, 31594569), (189, 10531523)]