18957939

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 15878541

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 59, 77, 91, 107, 143, 177, 231, 273, 321, 413, 429, 649, 749, 767, 1001, 1177, 1239, 1391, 1947, 2247, 2301, 3003, 3531, 4173, 4543, 5369, 6313, 8239, 8437, 9737, 13629, 15301, 16107, 18939, 24717, 25311, 29211, 44191, 45903, 59059, 69443, 82069, 107107, 132573, 177177, 208329, 246207, 321321, 486101, 574483, 902759, 1458303, 1723449, 2708277, 6319313, 18957939]

約数ペア:

[(1, 18957939), (3, 6319313), (7, 2708277), (11, 1723449), (13, 1458303), (21, 902759), (33, 574483), (39, 486101), (59, 321321), (77, 246207), (91, 208329), (107, 177177), (143, 132573), (177, 107107), (231, 82069), (273, 69443), (321, 59059), (413, 45903), (429, 44191), (649, 29211), (749, 25311), (767, 24717), (1001, 18939), (1177, 16107), (1239, 15301), (1391, 13629), (1947, 9737), (2247, 8437), (2301, 8239), (3003, 6313), (3531, 5369), (4173, 4543)]