21378672

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 120

約数和(自身を含む): 69328896

約数和(自身を除く): 47950224

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 127, 144, 167, 168, 252, 254, 334, 336, 381, 501, 504, 508, 668, 762, 889, 1002, 1008, 1016, 1143, 1169, 1336, 1503, 1524, 1778, 2004, 2032, 2286, 2338, 2667, 2672, 3006, 3048, 3507, 3556, 4008, 4572, 4676, 5334, 6012, 6096, 7014, 7112, 8001, 8016, 9144, 9352, 10521, 10668, 12024, 14028, 14224, 16002, 18288, 18704, 21042, 21209, 21336, 24048, 28056, 32004, 42084, 42418, 42672, 56112, 63627, 64008, 84168, 84836, 127254, 128016, 148463, 168336, 169672, 190881, 254508, 296926, 339344, 381762, 445389, 509016, 593852, 763524, 890778, 1018032, 1187704, 1336167, 1527048, 1781556, 2375408, 2672334, 3054096, 3563112, 5344668, 7126224, 10689336, 21378672]

約数ペア:

[(1, 21378672), (2, 10689336), (3, 7126224), (4, 5344668), (6, 3563112), (7, 3054096), (8, 2672334), (9, 2375408), (12, 1781556), (14, 1527048), (16, 1336167), (18, 1187704), (21, 1018032), (24, 890778), (28, 763524), (36, 593852), (42, 509016), (48, 445389), (56, 381762), (63, 339344), (72, 296926), (84, 254508), (112, 190881), (126, 169672), (127, 168336), (144, 148463), (167, 128016), (168, 127254), (252, 84836), (254, 84168), (334, 64008), (336, 63627), (381, 56112), (501, 42672), (504, 42418), (508, 42084), (668, 32004), (762, 28056), (889, 24048), (1002, 21336), (1008, 21209), (1016, 21042), (1143, 18704), (1169, 18288), (1336, 16002), (1503, 14224), (1524, 14028), (1778, 12024), (2004, 10668), (2032, 10521), (2286, 9352), (2338, 9144), (2667, 8016), (2672, 8001), (3006, 7112), (3048, 7014), (3507, 6096), (3556, 6012), (4008, 5334), (4572, 4676)]