20744919

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{593}}^1$

素因数の和:648

約数の個数: 36

約数和(自身を含む): 33915024

約数和(自身を除く): 13170105

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 593, 897, 1521, 1779, 2691, 3887, 5337, 7709, 11661, 13639, 23127, 34983, 40917, 69381, 100217, 122751, 177307, 300651, 531921, 901953, 1595763, 2304991, 6914973, 20744919]

約数ペア:

[(1, 20744919), (3, 6914973), (9, 2304991), (13, 1595763), (23, 901953), (39, 531921), (69, 300651), (117, 177307), (169, 122751), (207, 100217), (299, 69381), (507, 40917), (593, 34983), (897, 23127), (1521, 13639), (1779, 11661), (2691, 7709), (3887, 5337)]