640009188

素因数分解:

$2^2\times 3^4\times 7^3\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 240

約数和(自身を含む): 2105980800

約数和(自身を除く): 1465971612

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 49, 52, 54, 63, 78, 81, 84, 91, 98, 108, 117, 126, 147, 156, 162, 182, 189, 196, 234, 252, 273, 294, 324, 343, 351, 364, 378, 441, 443, 468, 546, 567, 588, 637, 686, 702, 756, 819, 882, 886, 1029, 1053, 1092, 1134, 1274, 1323, 1329, 1372, 1404, 1638, 1764, 1772, 1911, 2058, 2106, 2268, 2457, 2548, 2646, 2658, 3087, 3101, 3276, 3822, 3969, 3987, 4116, 4212, 4459, 4914, 5292, 5316, 5733, 5759, 6174, 6202, 7371, 7644, 7938, 7974, 8918, 9261, 9303, 9828, 11466, 11518, 11961, 12348, 12404, 13377, 14742, 15876, 15948, 17199, 17277, 17836, 18522, 18606, 21707, 22932, 23036, 23922, 26754, 27783, 27909, 29484, 34398, 34554, 35883, 37044, 37212, 40131, 40313, 43414, 47844, 51597, 51831, 53508, 55566, 55818, 65121, 68796, 69108, 71766, 80262, 80626, 83727, 86828, 103194, 103662, 111132, 111636, 120393, 120939, 130242, 143532, 151949, 155493, 160524, 161252, 167454, 195363, 206388, 207324, 240786, 241878, 251181, 260484, 282191, 303898, 310986, 334908, 361179, 362817, 390726, 455847, 466479, 481572, 483756, 502362, 564382, 586089, 607796, 621972, 722358, 725634, 781452, 846573, 911694, 932958, 1004724, 1088451, 1128764, 1172178, 1367541, 1444716, 1451268, 1693146, 1758267, 1823388, 1865916, 1975337, 2176902, 2344356, 2539719, 2735082, 3265353, 3386292, 3516534, 3950674, 4102623, 4353804, 5079438, 5470164, 5926011, 6530706, 7033068, 7619157, 7901348, 8205246, 10158876, 11852022, 12307869, 13061412, 15238314, 16410492, 17778033, 22857471, 23704044, 24615738, 30476628, 35556066, 45714942, 49231476, 53334099, 71112132, 91429884, 106668198, 160002297, 213336396, 320004594, 640009188]

約数ペア:

[(1, 640009188), (2, 320004594), (3, 213336396), (4, 160002297), (6, 106668198), (7, 91429884), (9, 71112132), (12, 53334099), (13, 49231476), (14, 45714942), (18, 35556066), (21, 30476628), (26, 24615738), (27, 23704044), (28, 22857471), (36, 17778033), (39, 16410492), (42, 15238314), (49, 13061412), (52, 12307869), (54, 11852022), (63, 10158876), (78, 8205246), (81, 7901348), (84, 7619157), (91, 7033068), (98, 6530706), (108, 5926011), (117, 5470164), (126, 5079438), (147, 4353804), (156, 4102623), (162, 3950674), (182, 3516534), (189, 3386292), (196, 3265353), (234, 2735082), (252, 2539719), (273, 2344356), (294, 2176902), (324, 1975337), (343, 1865916), (351, 1823388), (364, 1758267), (378, 1693146), (441, 1451268), (443, 1444716), (468, 1367541), (546, 1172178), (567, 1128764), (588, 1088451), (637, 1004724), (686, 932958), (702, 911694), (756, 846573), (819, 781452), (882, 725634), (886, 722358), (1029, 621972), (1053, 607796), (1092, 586089), (1134, 564382), (1274, 502362), (1323, 483756), (1329, 481572), (1372, 466479), (1404, 455847), (1638, 390726), (1764, 362817), (1772, 361179), (1911, 334908), (2058, 310986), (2106, 303898), (2268, 282191), (2457, 260484), (2548, 251181), (2646, 241878), (2658, 240786), (3087, 207324), (3101, 206388), (3276, 195363), (3822, 167454), (3969, 161252), (3987, 160524), (4116, 155493), (4212, 151949), (4459, 143532), (4914, 130242), (5292, 120939), (5316, 120393), (5733, 111636), (5759, 111132), (6174, 103662), (6202, 103194), (7371, 86828), (7644, 83727), (7938, 80626), (7974, 80262), (8918, 71766), (9261, 69108), (9303, 68796), (9828, 65121), (11466, 55818), (11518, 55566), (11961, 53508), (12348, 51831), (12404, 51597), (13377, 47844), (14742, 43414), (15876, 40313), (15948, 40131), (17199, 37212), (17277, 37044), (17836, 35883), (18522, 34554), (18606, 34398), (21707, 29484), (22932, 27909), (23036, 27783), (23922, 26754)]