19987044

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:345

約数の個数: 96

約数和(自身を含む): 59006976

約数和(自身を除く): 39019932

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 97, 132, 154, 194, 223, 231, 291, 308, 388, 446, 462, 582, 669, 679, 892, 924, 1067, 1164, 1338, 1358, 1561, 2037, 2134, 2453, 2676, 2716, 3122, 3201, 4074, 4268, 4683, 4906, 6244, 6402, 7359, 7469, 8148, 9366, 9812, 12804, 14718, 14938, 17171, 18732, 21631, 22407, 29436, 29876, 34342, 43262, 44814, 51513, 64893, 68684, 86524, 89628, 103026, 129786, 151417, 206052, 237941, 259572, 302834, 454251, 475882, 605668, 713823, 908502, 951764, 1427646, 1665587, 1817004, 2855292, 3331174, 4996761, 6662348, 9993522, 19987044]

約数ペア:

[(1, 19987044), (2, 9993522), (3, 6662348), (4, 4996761), (6, 3331174), (7, 2855292), (11, 1817004), (12, 1665587), (14, 1427646), (21, 951764), (22, 908502), (28, 713823), (33, 605668), (42, 475882), (44, 454251), (66, 302834), (77, 259572), (84, 237941), (97, 206052), (132, 151417), (154, 129786), (194, 103026), (223, 89628), (231, 86524), (291, 68684), (308, 64893), (388, 51513), (446, 44814), (462, 43262), (582, 34342), (669, 29876), (679, 29436), (892, 22407), (924, 21631), (1067, 18732), (1164, 17171), (1338, 14938), (1358, 14718), (1561, 12804), (2037, 9812), (2134, 9366), (2453, 8148), (2676, 7469), (2716, 7359), (3122, 6402), (3201, 6244), (4074, 4906), (4268, 4683)]