21385056

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{263}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 70785792

約数和(自身を除く): 49400736

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 32, 33, 42, 44, 48, 56, 66, 77, 84, 88, 96, 112, 121, 132, 154, 168, 176, 224, 231, 242, 263, 264, 308, 336, 352, 363, 462, 484, 526, 528, 616, 672, 726, 789, 847, 924, 968, 1052, 1056, 1232, 1452, 1578, 1694, 1841, 1848, 1936, 2104, 2464, 2541, 2893, 2904, 3156, 3388, 3682, 3696, 3872, 4208, 5082, 5523, 5786, 5808, 6312, 6776, 7364, 7392, 8416, 8679, 10164, 11046, 11572, 11616, 12624, 13552, 14728, 17358, 20251, 20328, 22092, 23144, 25248, 27104, 29456, 31823, 34716, 40502, 40656, 44184, 46288, 58912, 60753, 63646, 69432, 81004, 81312, 88368, 92576, 95469, 121506, 127292, 138864, 162008, 176736, 190938, 222761, 243012, 254584, 277728, 324016, 381876, 445522, 486024, 509168, 648032, 668283, 763752, 891044, 972048, 1018336, 1336566, 1527504, 1782088, 1944096, 2673132, 3055008, 3564176, 5346264, 7128352, 10692528, 21385056]

約数ペア:

[(1, 21385056), (2, 10692528), (3, 7128352), (4, 5346264), (6, 3564176), (7, 3055008), (8, 2673132), (11, 1944096), (12, 1782088), (14, 1527504), (16, 1336566), (21, 1018336), (22, 972048), (24, 891044), (28, 763752), (32, 668283), (33, 648032), (42, 509168), (44, 486024), (48, 445522), (56, 381876), (66, 324016), (77, 277728), (84, 254584), (88, 243012), (96, 222761), (112, 190938), (121, 176736), (132, 162008), (154, 138864), (168, 127292), (176, 121506), (224, 95469), (231, 92576), (242, 88368), (263, 81312), (264, 81004), (308, 69432), (336, 63646), (352, 60753), (363, 58912), (462, 46288), (484, 44184), (526, 40656), (528, 40502), (616, 34716), (672, 31823), (726, 29456), (789, 27104), (847, 25248), (924, 23144), (968, 22092), (1052, 20328), (1056, 20251), (1232, 17358), (1452, 14728), (1578, 13552), (1694, 12624), (1841, 11616), (1848, 11572), (1936, 11046), (2104, 10164), (2464, 8679), (2541, 8416), (2893, 7392), (2904, 7364), (3156, 6776), (3388, 6312), (3682, 5808), (3696, 5786), (3872, 5523), (4208, 5082)]