21259728

素因数分解:

$2^4\times 3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:182

約数の個数: 180

約数和(自身を含む): 72772128

約数和(自身を除く): 51512400

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 23, 24, 28, 36, 42, 46, 48, 49, 56, 63, 69, 72, 84, 92, 98, 112, 126, 131, 138, 144, 147, 161, 168, 184, 196, 207, 252, 262, 276, 294, 322, 336, 368, 392, 393, 414, 441, 483, 504, 524, 552, 588, 644, 784, 786, 828, 882, 917, 966, 1008, 1048, 1104, 1127, 1176, 1179, 1288, 1449, 1572, 1656, 1764, 1834, 1932, 2096, 2254, 2352, 2358, 2576, 2751, 2898, 3013, 3144, 3312, 3381, 3528, 3668, 3864, 4508, 4716, 5502, 5796, 6026, 6288, 6419, 6762, 7056, 7336, 7728, 8253, 9016, 9039, 9432, 10143, 11004, 11592, 12052, 12838, 13524, 14672, 16506, 18032, 18078, 18864, 19257, 20286, 21091, 22008, 23184, 24104, 25676, 27048, 27117, 33012, 36156, 38514, 40572, 42182, 44016, 48208, 51352, 54096, 54234, 57771, 63273, 66024, 72312, 77028, 81144, 84364, 102704, 108468, 115542, 126546, 132048, 144624, 147637, 154056, 162288, 168728, 189819, 216936, 231084, 253092, 295274, 308112, 337456, 379638, 433872, 442911, 462168, 506184, 590548, 759276, 885822, 924336, 1012368, 1181096, 1328733, 1518552, 1771644, 2362192, 2657466, 3037104, 3543288, 5314932, 7086576, 10629864, 21259728]

約数ペア:

[(1, 21259728), (2, 10629864), (3, 7086576), (4, 5314932), (6, 3543288), (7, 3037104), (8, 2657466), (9, 2362192), (12, 1771644), (14, 1518552), (16, 1328733), (18, 1181096), (21, 1012368), (23, 924336), (24, 885822), (28, 759276), (36, 590548), (42, 506184), (46, 462168), (48, 442911), (49, 433872), (56, 379638), (63, 337456), (69, 308112), (72, 295274), (84, 253092), (92, 231084), (98, 216936), (112, 189819), (126, 168728), (131, 162288), (138, 154056), (144, 147637), (147, 144624), (161, 132048), (168, 126546), (184, 115542), (196, 108468), (207, 102704), (252, 84364), (262, 81144), (276, 77028), (294, 72312), (322, 66024), (336, 63273), (368, 57771), (392, 54234), (393, 54096), (414, 51352), (441, 48208), (483, 44016), (504, 42182), (524, 40572), (552, 38514), (588, 36156), (644, 33012), (784, 27117), (786, 27048), (828, 25676), (882, 24104), (917, 23184), (966, 22008), (1008, 21091), (1048, 20286), (1104, 19257), (1127, 18864), (1176, 18078), (1179, 18032), (1288, 16506), (1449, 14672), (1572, 13524), (1656, 12838), (1764, 12052), (1834, 11592), (1932, 11004), (2096, 10143), (2254, 9432), (2352, 9039), (2358, 9016), (2576, 8253), (2751, 7728), (2898, 7336), (3013, 7056), (3144, 6762), (3312, 6419), (3381, 6288), (3528, 6026), (3668, 5796), (3864, 5502), (4508, 4716)]