21509748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 64209600

約数和(自身を除く): 42699852

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 41, 52, 57, 59, 76, 78, 82, 114, 117, 118, 123, 156, 164, 171, 177, 228, 234, 236, 246, 247, 342, 354, 369, 468, 492, 494, 531, 533, 684, 708, 738, 741, 767, 779, 988, 1062, 1066, 1121, 1476, 1482, 1534, 1558, 1599, 2124, 2132, 2223, 2242, 2301, 2337, 2419, 2964, 3068, 3116, 3198, 3363, 4446, 4484, 4602, 4674, 4797, 4838, 6396, 6726, 6903, 7011, 7257, 8892, 9204, 9348, 9594, 9676, 10089, 10127, 13452, 13806, 14022, 14514, 14573, 19188, 20178, 20254, 21771, 27612, 28044, 29028, 29146, 30381, 31447, 40356, 40508, 43542, 43719, 45961, 58292, 60762, 62894, 87084, 87438, 91143, 91922, 94341, 121524, 125788, 131157, 137883, 174876, 182286, 183844, 188682, 262314, 275766, 283023, 364572, 377364, 413649, 524628, 551532, 566046, 597493, 827298, 1132092, 1194986, 1654596, 1792479, 2389972, 3584958, 5377437, 7169916, 10754874, 21509748]

約数ペア:

[(1, 21509748), (2, 10754874), (3, 7169916), (4, 5377437), (6, 3584958), (9, 2389972), (12, 1792479), (13, 1654596), (18, 1194986), (19, 1132092), (26, 827298), (36, 597493), (38, 566046), (39, 551532), (41, 524628), (52, 413649), (57, 377364), (59, 364572), (76, 283023), (78, 275766), (82, 262314), (114, 188682), (117, 183844), (118, 182286), (123, 174876), (156, 137883), (164, 131157), (171, 125788), (177, 121524), (228, 94341), (234, 91922), (236, 91143), (246, 87438), (247, 87084), (342, 62894), (354, 60762), (369, 58292), (468, 45961), (492, 43719), (494, 43542), (531, 40508), (533, 40356), (684, 31447), (708, 30381), (738, 29146), (741, 29028), (767, 28044), (779, 27612), (988, 21771), (1062, 20254), (1066, 20178), (1121, 19188), (1476, 14573), (1482, 14514), (1534, 14022), (1558, 13806), (1599, 13452), (2124, 10127), (2132, 10089), (2223, 9676), (2242, 9594), (2301, 9348), (2337, 9204), (2419, 8892), (2964, 7257), (3068, 7011), (3116, 6903), (3198, 6726), (3363, 6396), (4446, 4838), (4484, 4797), (4602, 4674)]