20785128

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:367

約数の個数: 128

約数和(自身を含む): 66232320

約数和(自身を除く): 45447192

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 31, 39, 42, 52, 56, 62, 78, 84, 91, 93, 104, 124, 156, 168, 182, 186, 217, 248, 273, 307, 312, 364, 372, 403, 434, 546, 614, 651, 728, 744, 806, 868, 921, 1092, 1209, 1228, 1302, 1612, 1736, 1842, 2149, 2184, 2418, 2456, 2604, 2821, 3224, 3684, 3991, 4298, 4836, 5208, 5642, 6447, 7368, 7982, 8463, 8596, 9517, 9672, 11284, 11973, 12894, 15964, 16926, 17192, 19034, 22568, 23946, 25788, 27937, 28551, 31928, 33852, 38068, 47892, 51576, 55874, 57102, 66619, 67704, 76136, 83811, 95784, 111748, 114204, 123721, 133238, 167622, 199857, 223496, 228408, 247442, 266476, 335244, 371163, 399714, 494884, 532952, 670488, 742326, 799428, 866047, 989768, 1484652, 1598856, 1732094, 2598141, 2969304, 3464188, 5196282, 6928376, 10392564, 20785128]

約数ペア:

[(1, 20785128), (2, 10392564), (3, 6928376), (4, 5196282), (6, 3464188), (7, 2969304), (8, 2598141), (12, 1732094), (13, 1598856), (14, 1484652), (21, 989768), (24, 866047), (26, 799428), (28, 742326), (31, 670488), (39, 532952), (42, 494884), (52, 399714), (56, 371163), (62, 335244), (78, 266476), (84, 247442), (91, 228408), (93, 223496), (104, 199857), (124, 167622), (156, 133238), (168, 123721), (182, 114204), (186, 111748), (217, 95784), (248, 83811), (273, 76136), (307, 67704), (312, 66619), (364, 57102), (372, 55874), (403, 51576), (434, 47892), (546, 38068), (614, 33852), (651, 31928), (728, 28551), (744, 27937), (806, 25788), (868, 23946), (921, 22568), (1092, 19034), (1209, 17192), (1228, 16926), (1302, 15964), (1612, 12894), (1736, 11973), (1842, 11284), (2149, 9672), (2184, 9517), (2418, 8596), (2456, 8463), (2604, 7982), (2821, 7368), (3224, 6447), (3684, 5642), (3991, 5208), (4298, 4836)]