21271068

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:224

約数の個数: 144

約数和(自身を含む): 68164096

約数和(自身を除く): 46893028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 43, 52, 63, 78, 84, 86, 91, 117, 126, 129, 151, 156, 172, 182, 234, 252, 258, 273, 301, 302, 364, 387, 453, 468, 516, 546, 559, 602, 604, 774, 819, 903, 906, 1057, 1092, 1118, 1204, 1359, 1548, 1638, 1677, 1806, 1812, 1963, 2114, 2236, 2709, 2718, 3171, 3276, 3354, 3612, 3913, 3926, 4228, 5031, 5418, 5436, 5889, 6342, 6493, 6708, 7826, 7852, 9513, 10062, 10836, 11739, 11778, 12684, 12986, 13741, 15652, 17667, 19026, 19479, 20124, 23478, 23556, 25972, 27482, 35217, 35334, 38052, 38958, 41223, 45451, 46956, 54964, 58437, 70434, 70668, 77916, 82446, 84409, 90902, 116874, 123669, 136353, 140868, 164892, 168818, 181804, 233748, 247338, 253227, 272706, 337636, 409059, 494676, 506454, 545412, 590863, 759681, 818118, 1012908, 1181726, 1519362, 1636236, 1772589, 2363452, 3038724, 3545178, 5317767, 7090356, 10635534, 21271068]

約数ペア:

[(1, 21271068), (2, 10635534), (3, 7090356), (4, 5317767), (6, 3545178), (7, 3038724), (9, 2363452), (12, 1772589), (13, 1636236), (14, 1519362), (18, 1181726), (21, 1012908), (26, 818118), (28, 759681), (36, 590863), (39, 545412), (42, 506454), (43, 494676), (52, 409059), (63, 337636), (78, 272706), (84, 253227), (86, 247338), (91, 233748), (117, 181804), (126, 168818), (129, 164892), (151, 140868), (156, 136353), (172, 123669), (182, 116874), (234, 90902), (252, 84409), (258, 82446), (273, 77916), (301, 70668), (302, 70434), (364, 58437), (387, 54964), (453, 46956), (468, 45451), (516, 41223), (546, 38958), (559, 38052), (602, 35334), (604, 35217), (774, 27482), (819, 25972), (903, 23556), (906, 23478), (1057, 20124), (1092, 19479), (1118, 19026), (1204, 17667), (1359, 15652), (1548, 13741), (1638, 12986), (1677, 12684), (1806, 11778), (1812, 11739), (1963, 10836), (2114, 10062), (2236, 9513), (2709, 7852), (2718, 7826), (3171, 6708), (3276, 6493), (3354, 6342), (3612, 5889), (3913, 5436), (3926, 5418), (4228, 5031)]