18968859

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:121

約数の個数: 96

約数和(自身を含む): 37739520

約数和(自身を除く): 18770661

約数列:

[1, 3, 7, 9, 13, 19, 21, 23, 39, 53, 57, 63, 69, 91, 117, 133, 159, 161, 171, 207, 247, 273, 299, 371, 399, 437, 477, 483, 689, 741, 819, 897, 1007, 1113, 1197, 1219, 1311, 1449, 1729, 2067, 2093, 2223, 2691, 3021, 3059, 3339, 3657, 3933, 4823, 5187, 5681, 6201, 6279, 7049, 8533, 9063, 9177, 10971, 13091, 14469, 15561, 15847, 17043, 18837, 21147, 23161, 25599, 27531, 39273, 39767, 43407, 47541, 51129, 63441, 69483, 76797, 91637, 110929, 117819, 119301, 142623, 162127, 208449, 274911, 301093, 332787, 357903, 486381, 824733, 903279, 998361, 1459143, 2107651, 2709837, 6322953, 18968859]

約数ペア:

[(1, 18968859), (3, 6322953), (7, 2709837), (9, 2107651), (13, 1459143), (19, 998361), (21, 903279), (23, 824733), (39, 486381), (53, 357903), (57, 332787), (63, 301093), (69, 274911), (91, 208449), (117, 162127), (133, 142623), (159, 119301), (161, 117819), (171, 110929), (207, 91637), (247, 76797), (273, 69483), (299, 63441), (371, 51129), (399, 47541), (437, 43407), (477, 39767), (483, 39273), (689, 27531), (741, 25599), (819, 23161), (897, 21147), (1007, 18837), (1113, 17043), (1197, 15847), (1219, 15561), (1311, 14469), (1449, 13091), (1729, 10971), (2067, 9177), (2093, 9063), (2223, 8533), (2691, 7049), (3021, 6279), (3059, 6201), (3339, 5681), (3657, 5187), (3933, 4823)]