21279510

素因数分解:

$2^1\times 3^7\times 5^1\times 7^1\times {\mathrm{139}}^1$

素因数の和:174

約数の個数: 128

約数和(自身を含む): 66124800

約数和(自身を除く): 44845290

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 81, 90, 105, 126, 135, 139, 162, 189, 210, 243, 270, 278, 315, 378, 405, 417, 486, 567, 630, 695, 729, 810, 834, 945, 973, 1134, 1215, 1251, 1390, 1458, 1701, 1890, 1946, 2085, 2187, 2430, 2502, 2835, 2919, 3402, 3645, 3753, 4170, 4374, 4865, 5103, 5670, 5838, 6255, 7290, 7506, 8505, 8757, 9730, 10206, 10935, 11259, 12510, 14595, 15309, 17010, 17514, 18765, 21870, 22518, 25515, 26271, 29190, 30618, 33777, 37530, 43785, 51030, 52542, 56295, 67554, 76545, 78813, 87570, 101331, 112590, 131355, 153090, 157626, 168885, 202662, 236439, 262710, 303993, 337770, 394065, 472878, 506655, 607986, 709317, 788130, 1013310, 1182195, 1418634, 1519965, 2127951, 2364390, 3039930, 3546585, 4255902, 7093170, 10639755, 21279510]

約数ペア:

[(1, 21279510), (2, 10639755), (3, 7093170), (5, 4255902), (6, 3546585), (7, 3039930), (9, 2364390), (10, 2127951), (14, 1519965), (15, 1418634), (18, 1182195), (21, 1013310), (27, 788130), (30, 709317), (35, 607986), (42, 506655), (45, 472878), (54, 394065), (63, 337770), (70, 303993), (81, 262710), (90, 236439), (105, 202662), (126, 168885), (135, 157626), (139, 153090), (162, 131355), (189, 112590), (210, 101331), (243, 87570), (270, 78813), (278, 76545), (315, 67554), (378, 56295), (405, 52542), (417, 51030), (486, 43785), (567, 37530), (630, 33777), (695, 30618), (729, 29190), (810, 26271), (834, 25515), (945, 22518), (973, 21870), (1134, 18765), (1215, 17514), (1251, 17010), (1390, 15309), (1458, 14595), (1701, 12510), (1890, 11259), (1946, 10935), (2085, 10206), (2187, 9730), (2430, 8757), (2502, 8505), (2835, 7506), (2919, 7290), (3402, 6255), (3645, 5838), (3753, 5670), (4170, 5103), (4374, 4865)]