21195216

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 160

約数和(自身を含む): 71582720

約数和(自身を除く): 50387504

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 43, 48, 54, 56, 63, 72, 84, 86, 108, 112, 126, 129, 144, 163, 168, 172, 189, 216, 252, 258, 301, 326, 336, 344, 378, 387, 432, 489, 504, 516, 602, 652, 688, 756, 774, 903, 978, 1008, 1032, 1141, 1161, 1204, 1304, 1467, 1512, 1548, 1806, 1956, 2064, 2282, 2322, 2408, 2608, 2709, 2934, 3024, 3096, 3423, 3612, 3912, 4401, 4564, 4644, 4816, 5418, 5868, 6192, 6846, 7009, 7224, 7824, 8127, 8802, 9128, 9288, 10269, 10836, 11736, 13692, 14018, 14448, 16254, 17604, 18256, 18576, 20538, 21027, 21672, 23472, 27384, 28036, 30807, 32508, 35208, 41076, 42054, 43344, 49063, 54768, 56072, 61614, 63081, 65016, 70416, 82152, 84108, 98126, 112144, 123228, 126162, 130032, 147189, 164304, 168216, 189243, 196252, 246456, 252324, 294378, 336432, 378486, 392504, 441567, 492912, 504648, 588756, 756972, 785008, 883134, 1009296, 1177512, 1324701, 1513944, 1766268, 2355024, 2649402, 3027888, 3532536, 5298804, 7065072, 10597608, 21195216]

約数ペア:

[(1, 21195216), (2, 10597608), (3, 7065072), (4, 5298804), (6, 3532536), (7, 3027888), (8, 2649402), (9, 2355024), (12, 1766268), (14, 1513944), (16, 1324701), (18, 1177512), (21, 1009296), (24, 883134), (27, 785008), (28, 756972), (36, 588756), (42, 504648), (43, 492912), (48, 441567), (54, 392504), (56, 378486), (63, 336432), (72, 294378), (84, 252324), (86, 246456), (108, 196252), (112, 189243), (126, 168216), (129, 164304), (144, 147189), (163, 130032), (168, 126162), (172, 123228), (189, 112144), (216, 98126), (252, 84108), (258, 82152), (301, 70416), (326, 65016), (336, 63081), (344, 61614), (378, 56072), (387, 54768), (432, 49063), (489, 43344), (504, 42054), (516, 41076), (602, 35208), (652, 32508), (688, 30807), (756, 28036), (774, 27384), (903, 23472), (978, 21672), (1008, 21027), (1032, 20538), (1141, 18576), (1161, 18256), (1204, 17604), (1304, 16254), (1467, 14448), (1512, 14018), (1548, 13692), (1806, 11736), (1956, 10836), (2064, 10269), (2282, 9288), (2322, 9128), (2408, 8802), (2608, 8127), (2709, 7824), (2934, 7224), (3024, 7009), (3096, 6846), (3423, 6192), (3612, 5868), (3912, 5418), (4401, 4816), (4564, 4644)]