20399013

素因数分解:

$3^3\times {\mathrm{439}}^1\times {\mathrm{1721}}^1$

素因数の和:2169

約数の個数: 16

約数和(自身を含む): 30307200

約数和(自身を除く): 9908187

約数列:

[1, 3, 9, 27, 439, 1317, 1721, 3951, 5163, 11853, 15489, 46467, 755519, 2266557, 6799671, 20399013]

約数ペア:

[(1, 20399013), (3, 6799671), (9, 2266557), (27, 755519), (439, 46467), (1317, 15489), (1721, 11853), (3951, 5163)]