18992988

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 59435040

約数和(自身を除く): 40442052

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 49, 54, 63, 74, 84, 97, 98, 108, 111, 126, 147, 148, 189, 194, 196, 222, 252, 259, 291, 294, 333, 378, 388, 441, 444, 518, 582, 588, 666, 679, 756, 777, 873, 882, 999, 1036, 1164, 1323, 1332, 1358, 1554, 1746, 1764, 1813, 1998, 2037, 2331, 2619, 2646, 2716, 3108, 3492, 3589, 3626, 3996, 4074, 4662, 4753, 5238, 5292, 5439, 6111, 6993, 7178, 7252, 8148, 9324, 9506, 10476, 10767, 10878, 12222, 13986, 14259, 14356, 16317, 18333, 19012, 21534, 21756, 24444, 25123, 27972, 28518, 32301, 32634, 36666, 42777, 43068, 48951, 50246, 57036, 64602, 65268, 73332, 75369, 85554, 96903, 97902, 100492, 128331, 129204, 150738, 171108, 175861, 193806, 195804, 226107, 256662, 301476, 351722, 387612, 452214, 513324, 527583, 678321, 703444, 904428, 1055166, 1356642, 1582749, 2110332, 2713284, 3165498, 4748247, 6330996, 9496494, 18992988]

約数ペア:

[(1, 18992988), (2, 9496494), (3, 6330996), (4, 4748247), (6, 3165498), (7, 2713284), (9, 2110332), (12, 1582749), (14, 1356642), (18, 1055166), (21, 904428), (27, 703444), (28, 678321), (36, 527583), (37, 513324), (42, 452214), (49, 387612), (54, 351722), (63, 301476), (74, 256662), (84, 226107), (97, 195804), (98, 193806), (108, 175861), (111, 171108), (126, 150738), (147, 129204), (148, 128331), (189, 100492), (194, 97902), (196, 96903), (222, 85554), (252, 75369), (259, 73332), (291, 65268), (294, 64602), (333, 57036), (378, 50246), (388, 48951), (441, 43068), (444, 42777), (518, 36666), (582, 32634), (588, 32301), (666, 28518), (679, 27972), (756, 25123), (777, 24444), (873, 21756), (882, 21534), (999, 19012), (1036, 18333), (1164, 16317), (1323, 14356), (1332, 14259), (1358, 13986), (1554, 12222), (1746, 10878), (1764, 10767), (1813, 10476), (1998, 9506), (2037, 9324), (2331, 8148), (2619, 7252), (2646, 7178), (2716, 6993), (3108, 6111), (3492, 5439), (3589, 5292), (3626, 5238), (3996, 4753), (4074, 4662)]