21618597

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 40513536

約数和(自身を除く): 18894939

約数列:

[1, 3, 7, 11, 13, 21, 23, 33, 39, 69, 77, 91, 143, 161, 231, 253, 273, 299, 313, 429, 483, 759, 897, 939, 1001, 1771, 2093, 2191, 3003, 3289, 3443, 4069, 5313, 6279, 6573, 7199, 9867, 10329, 12207, 21597, 23023, 24101, 28483, 44759, 50393, 69069, 72303, 79189, 85449, 93587, 134277, 151179, 237567, 280761, 313313, 554323, 655109, 939939, 1029457, 1662969, 1965327, 3088371, 7206199, 21618597]

約数ペア:

[(1, 21618597), (3, 7206199), (7, 3088371), (11, 1965327), (13, 1662969), (21, 1029457), (23, 939939), (33, 655109), (39, 554323), (69, 313313), (77, 280761), (91, 237567), (143, 151179), (161, 134277), (231, 93587), (253, 85449), (273, 79189), (299, 72303), (313, 69069), (429, 50393), (483, 44759), (759, 28483), (897, 24101), (939, 23023), (1001, 21597), (1771, 12207), (2093, 10329), (2191, 9867), (3003, 7199), (3289, 6573), (3443, 6279), (4069, 5313)]