21270978

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:121

約数の個数: 96

約数和(自身を含む): 53049600

約数和(自身を除く): 31778622

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 29, 34, 47, 51, 54, 58, 87, 94, 102, 141, 153, 174, 261, 282, 289, 306, 423, 459, 493, 522, 578, 783, 799, 846, 867, 918, 986, 1269, 1363, 1479, 1566, 1598, 1734, 2397, 2538, 2601, 2726, 2958, 4089, 4437, 4794, 5202, 7191, 7803, 8178, 8381, 8874, 12267, 13311, 13583, 14382, 15606, 16762, 21573, 23171, 24534, 25143, 26622, 27166, 36801, 40749, 43146, 46342, 50286, 69513, 73602, 75429, 81498, 122247, 139026, 150858, 208539, 226287, 244494, 366741, 393907, 417078, 452574, 625617, 733482, 787814, 1181721, 1251234, 2363442, 3545163, 7090326, 10635489, 21270978]

約数ペア:

[(1, 21270978), (2, 10635489), (3, 7090326), (6, 3545163), (9, 2363442), (17, 1251234), (18, 1181721), (27, 787814), (29, 733482), (34, 625617), (47, 452574), (51, 417078), (54, 393907), (58, 366741), (87, 244494), (94, 226287), (102, 208539), (141, 150858), (153, 139026), (174, 122247), (261, 81498), (282, 75429), (289, 73602), (306, 69513), (423, 50286), (459, 46342), (493, 43146), (522, 40749), (578, 36801), (783, 27166), (799, 26622), (846, 25143), (867, 24534), (918, 23171), (986, 21573), (1269, 16762), (1363, 15606), (1479, 14382), (1566, 13583), (1598, 13311), (1734, 12267), (2397, 8874), (2538, 8381), (2601, 8178), (2726, 7803), (2958, 7191), (4089, 5202), (4437, 4794)]