20766480.000000000

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{659}}^1$

素因数の和:723

約数の個数: 144

約数和(自身を含む): 400276800

約数和(自身を除く): 271241964

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 49, 54, 63, 74, 84, 98, 108, 111, 126, 147, 148, 189, 196, 222, 252, 259, 294, 333, 378, 441, 444, 518, 588, 659, 666, 756, 777, 882, 999, 1036, 1318, 1323, 1332, 1554, 1764, 1813, 1977, 1998, 2331, 2636, 2646, 3108, 3626, 3954, 3996, 4613, 4662, 5292, 5439, 5931, 6993, 7252, 7908, 9226, 9324, 10878, 11862, 13839, 13986, 16317, 17793, 18452, 21756, 23724, 24383, 27678, 27972, 32291, 32634, 35586, 41517, 48766, 48951, 55356, 64582, 65268, 71172, 73149, 83034, 96873, 97532, 97902, 124551, 129164, 146298, 166068, 170681, 193746, 195804, 219447, 249102, 290619, 292596, 341362, 387492, 438894, 498204, 512043, 581238, 658341, 682724, 871857, 877788, 1024086, 1162476, 1194767, 1316682, 1536129, 1743714, 2048172, 2389534, 2633364, 3072258, 3487428, 3584301, 4608387, 4779068, 6144516, 7168602, 9216774, 10752903, 14337204, 18433548, 21505806, 32258709, 43011612, 64517418, 129034836]

約数ペア:

[(1, 129034836), (2, 64517418), (3, 43011612), (4, 32258709), (6, 21505806), (7, 18433548), (9, 14337204), (12, 10752903), (14, 9216774), (18, 7168602), (21, 6144516), (27, 4779068), (28, 4608387), (36, 3584301), (37, 3487428), (42, 3072258), (49, 2633364), (54, 2389534), (63, 2048172), (74, 1743714), (84, 1536129), (98, 1316682), (108, 1194767), (111, 1162476), (126, 1024086), (147, 877788), (148, 871857), (189, 682724), (196, 658341), (222, 581238), (252, 512043), (259, 498204), (294, 438894), (333, 387492), (378, 341362), (441, 292596), (444, 290619), (518, 249102), (588, 219447), (659, 195804), (666, 193746), (756, 170681), (777, 166068), (882, 146298), (999, 129164), (1036, 124551), (1318, 97902), (1323, 97532), (1332, 96873), (1554, 83034), (1764, 73149), (1813, 71172), (1977, 65268), (1998, 64582), (2331, 55356), (2636, 48951), (2646, 48766), (3108, 41517), (3626, 35586), (3954, 32634), (3996, 32291), (4613, 27972), (4662, 27678), (5292, 24383), (5439, 23724), (5931, 21756), (6993, 18452), (7252, 17793), (7908, 16317), (9226, 13986), (9324, 13839), (10878, 11862)]