20408073

素因数分解:

$3^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2707}}^1$

素因数の和:3076

約数の個数: 16

約数和(自身を含む): 31196160

約数和(自身を除く): 10788087

約数列:

[1, 3, 7, 21, 359, 1077, 2513, 2707, 7539, 8121, 18949, 56847, 971813, 2915439, 6802691, 20408073]

約数ペア:

[(1, 20408073), (3, 6802691), (7, 2915439), (21, 971813), (359, 56847), (1077, 18949), (2513, 8121), (2707, 7539)]