20399184

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1$

素因数の和:685

約数の個数: 120

約数和(自身を含む): 65198952

約数和(自身を除く): 44799768

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 17, 18, 24, 26, 34, 36, 39, 48, 51, 52, 68, 72, 78, 102, 104, 117, 136, 144, 153, 156, 204, 208, 221, 234, 272, 306, 312, 408, 442, 468, 612, 624, 641, 663, 816, 884, 936, 1224, 1282, 1326, 1768, 1872, 1923, 1989, 2448, 2564, 2652, 3536, 3846, 3978, 5128, 5304, 5769, 7692, 7956, 8333, 10256, 10608, 10897, 11538, 15384, 15912, 16666, 21794, 23076, 24999, 30768, 31824, 32691, 33332, 43588, 46152, 49998, 65382, 66664, 74997, 87176, 92304, 98073, 99996, 130764, 133328, 141661, 149994, 174352, 196146, 199992, 261528, 283322, 299988, 392292, 399984, 424983, 523056, 566644, 599976, 784584, 849966, 1133288, 1199952, 1274949, 1569168, 1699932, 2266576, 2549898, 3399864, 5099796, 6799728, 10199592, 20399184]

約数ペア:

[(1, 20399184), (2, 10199592), (3, 6799728), (4, 5099796), (6, 3399864), (8, 2549898), (9, 2266576), (12, 1699932), (13, 1569168), (16, 1274949), (17, 1199952), (18, 1133288), (24, 849966), (26, 784584), (34, 599976), (36, 566644), (39, 523056), (48, 424983), (51, 399984), (52, 392292), (68, 299988), (72, 283322), (78, 261528), (102, 199992), (104, 196146), (117, 174352), (136, 149994), (144, 141661), (153, 133328), (156, 130764), (204, 99996), (208, 98073), (221, 92304), (234, 87176), (272, 74997), (306, 66664), (312, 65382), (408, 49998), (442, 46152), (468, 43588), (612, 33332), (624, 32691), (641, 31824), (663, 30768), (816, 24999), (884, 23076), (936, 21794), (1224, 16666), (1282, 15912), (1326, 15384), (1768, 11538), (1872, 10897), (1923, 10608), (1989, 10256), (2448, 8333), (2564, 7956), (2652, 7692), (3536, 5769), (3846, 5304), (3978, 5128)]