20218389

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 29748096

約数和(自身を除く): 9529707

約数列:

[1, 3, 17, 51, 61, 67, 97, 183, 201, 291, 1037, 1139, 1649, 3111, 3417, 4087, 4947, 5917, 6499, 12261, 17751, 19497, 69479, 100589, 110483, 208437, 301767, 331449, 396439, 1189317, 6739463, 20218389]

約数ペア:

[(1, 20218389), (3, 6739463), (17, 1189317), (51, 396439), (61, 331449), (67, 301767), (97, 208437), (183, 110483), (201, 100589), (291, 69479), (1037, 19497), (1139, 17751), (1649, 12261), (3111, 6499), (3417, 5917), (4087, 4947)]