21098568981

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:356

約数の個数: 128

約数和(自身を含む): 36882432000

約数和(自身を除く): 15783863019

約数列:

[1, 3, 7, 17, 19, 21, 47, 51, 57, 119, 133, 141, 229, 289, 323, 329, 357, 399, 687, 799, 867, 893, 969, 987, 1603, 2023, 2261, 2397, 2679, 3893, 4351, 4809, 4913, 5491, 5593, 6069, 6251, 6783, 10763, 11679, 13053, 13583, 14739, 15181, 16473, 16779, 18753, 27251, 30457, 32289, 34391, 38437, 40749, 45543, 66181, 73967, 75341, 81753, 91371, 93347, 95081, 103173, 106267, 115311, 182971, 198543, 204497, 221901, 226023, 230911, 258077, 280041, 285243, 318801, 463267, 517769, 548913, 613491, 653429, 692733, 774231, 1125077, 1257439, 1280797, 1389801, 1431479, 1553307, 1616377, 1806539, 1960287, 3110507, 3375231, 3476449, 3772317, 3842391, 4294437, 4387309, 4849131, 5419617, 7875539, 8802073, 9331521, 10429347, 13161927, 21376463, 21773549, 23626617, 24335143, 26406219, 30711163, 52878619, 59099633, 64129389, 65320647, 73005429, 92133489, 149635241, 158635857, 177298899, 370150333, 413697431, 448905723, 1004693761, 1110450999, 1241092293, 3014081283, 7032856327, 21098568981]

約数ペア:

[(1, 21098568981), (3, 7032856327), (7, 3014081283), (17, 1241092293), (19, 1110450999), (21, 1004693761), (47, 448905723), (51, 413697431), (57, 370150333), (119, 177298899), (133, 158635857), (141, 149635241), (229, 92133489), (289, 73005429), (323, 65320647), (329, 64129389), (357, 59099633), (399, 52878619), (687, 30711163), (799, 26406219), (867, 24335143), (893, 23626617), (969, 21773549), (987, 21376463), (1603, 13161927), (2023, 10429347), (2261, 9331521), (2397, 8802073), (2679, 7875539), (3893, 5419617), (4351, 4849131), (4809, 4387309), (4913, 4294437), (5491, 3842391), (5593, 3772317), (6069, 3476449), (6251, 3375231), (6783, 3110507), (10763, 1960287), (11679, 1806539), (13053, 1616377), (13583, 1553307), (14739, 1431479), (15181, 1389801), (16473, 1280797), (16779, 1257439), (18753, 1125077), (27251, 774231), (30457, 692733), (32289, 653429), (34391, 613491), (38437, 548913), (40749, 517769), (45543, 463267), (66181, 318801), (73967, 285243), (75341, 280041), (81753, 258077), (91371, 230911), (93347, 226023), (95081, 221901), (103173, 204497), (106267, 198543), (115311, 182971)]