20808417

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{6079}}^1$

素因数の和:6252

約数の個数: 16

約数和(自身を含む): 31907840

約数和(自身を除く): 11099423

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 6079, 18237, 42553, 127659, 990877, 2972631, 6936139, 20808417]

約数ペア:

[(1, 20808417), (3, 6936139), (7, 2972631), (21, 990877), (163, 127659), (489, 42553), (1141, 18237), (3423, 6079)]