20995143

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{3613}}^1$

素因数の和:3778

約数の個数: 16

約数和(自身を含む): 30357600

約数和(自身を除く): 9362457

約数列:

[1, 3, 13, 39, 149, 447, 1937, 3613, 5811, 10839, 46969, 140907, 538337, 1615011, 6998381, 20995143]

約数ペア:

[(1, 20995143), (3, 6998381), (13, 1615011), (39, 538337), (149, 140907), (447, 46969), (1937, 10839), (3613, 5811)]