21340872

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:312

約数の個数: 144

約数和(自身を含む): 70424640

約数和(自身を除く): 49083768

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 23, 24, 28, 36, 42, 46, 49, 56, 63, 69, 72, 84, 92, 98, 126, 138, 147, 161, 168, 184, 196, 207, 252, 263, 276, 294, 322, 392, 414, 441, 483, 504, 526, 552, 588, 644, 789, 828, 882, 966, 1052, 1127, 1176, 1288, 1449, 1578, 1656, 1764, 1841, 1932, 2104, 2254, 2367, 2898, 3156, 3381, 3528, 3682, 3864, 4508, 4734, 5523, 5796, 6049, 6312, 6762, 7364, 9016, 9468, 10143, 11046, 11592, 12098, 12887, 13524, 14728, 16569, 18147, 18936, 20286, 22092, 24196, 25774, 27048, 33138, 36294, 38661, 40572, 42343, 44184, 48392, 51548, 54441, 66276, 72588, 77322, 81144, 84686, 103096, 108882, 115983, 127029, 132552, 145176, 154644, 169372, 217764, 231966, 254058, 296401, 309288, 338744, 381087, 435528, 463932, 508116, 592802, 762174, 889203, 927864, 1016232, 1185604, 1524348, 1778406, 2371208, 2667609, 3048696, 3556812, 5335218, 7113624, 10670436, 21340872]

約数ペア:

[(1, 21340872), (2, 10670436), (3, 7113624), (4, 5335218), (6, 3556812), (7, 3048696), (8, 2667609), (9, 2371208), (12, 1778406), (14, 1524348), (18, 1185604), (21, 1016232), (23, 927864), (24, 889203), (28, 762174), (36, 592802), (42, 508116), (46, 463932), (49, 435528), (56, 381087), (63, 338744), (69, 309288), (72, 296401), (84, 254058), (92, 231966), (98, 217764), (126, 169372), (138, 154644), (147, 145176), (161, 132552), (168, 127029), (184, 115983), (196, 108882), (207, 103096), (252, 84686), (263, 81144), (276, 77322), (294, 72588), (322, 66276), (392, 54441), (414, 51548), (441, 48392), (483, 44184), (504, 42343), (526, 40572), (552, 38661), (588, 36294), (644, 33138), (789, 27048), (828, 25774), (882, 24196), (966, 22092), (1052, 20286), (1127, 18936), (1176, 18147), (1288, 16569), (1449, 14728), (1578, 13524), (1656, 12887), (1764, 12098), (1841, 11592), (1932, 11046), (2104, 10143), (2254, 9468), (2367, 9016), (2898, 7364), (3156, 6762), (3381, 6312), (3528, 6049), (3682, 5796), (3864, 5523), (4508, 4734)]