21549969

素因数分解:

$3^6\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 56

約数和(自身を含む): 38193792

約数和(自身を除く): 16643823

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 81, 103, 123, 189, 243, 287, 309, 369, 567, 721, 729, 861, 927, 1107, 1701, 2163, 2583, 2781, 3321, 4223, 5103, 6489, 7749, 8343, 9963, 12669, 19467, 23247, 25029, 29561, 29889, 38007, 58401, 69741, 75087, 88683, 114021, 175203, 209223, 266049, 342063, 525609, 798147, 1026189, 2394441, 3078567, 7183323, 21549969]

約数ペア:

[(1, 21549969), (3, 7183323), (7, 3078567), (9, 2394441), (21, 1026189), (27, 798147), (41, 525609), (63, 342063), (81, 266049), (103, 209223), (123, 175203), (189, 114021), (243, 88683), (287, 75087), (309, 69741), (369, 58401), (567, 38007), (721, 29889), (729, 29561), (861, 25029), (927, 23247), (1107, 19467), (1701, 12669), (2163, 9963), (2583, 8343), (2781, 7749), (3321, 6489), (4223, 5103)]