208578447

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 421125120

約数和(自身を除く): 212546673

約数列:

[1, 3, 7, 9, 11, 19, 21, 31, 33, 49, 57, 63, 73, 77, 93, 99, 133, 147, 171, 209, 217, 219, 231, 279, 341, 399, 441, 511, 539, 589, 627, 651, 657, 693, 803, 931, 1023, 1197, 1387, 1463, 1519, 1533, 1617, 1767, 1881, 1953, 2263, 2387, 2409, 2793, 3069, 3577, 4123, 4161, 4389, 4557, 4599, 4851, 5301, 5621, 6479, 6789, 7161, 7227, 8379, 9709, 10241, 10731, 12369, 12483, 13167, 13671, 15257, 15841, 16709, 16863, 19437, 20367, 21483, 24893, 28861, 29127, 30723, 32193, 37107, 39347, 42997, 45353, 45771, 47523, 50127, 50589, 58311, 67963, 74679, 86583, 87381, 92169, 106799, 110887, 118041, 128991, 136059, 137313, 142569, 150381, 174251, 203889, 224037, 259749, 300979, 317471, 320397, 332661, 354123, 386973, 408177, 472967, 522753, 611667, 747593, 902937, 952413, 961191, 997983, 1219757, 1418901, 1568259, 2106853, 2242779, 2708811, 2857239, 3310769, 3659271, 4256703, 6320559, 6728337, 9932307, 10977813, 18961677, 23175383, 29796921, 69526149, 208578447]

約数ペア:

[(1, 208578447), (3, 69526149), (7, 29796921), (9, 23175383), (11, 18961677), (19, 10977813), (21, 9932307), (31, 6728337), (33, 6320559), (49, 4256703), (57, 3659271), (63, 3310769), (73, 2857239), (77, 2708811), (93, 2242779), (99, 2106853), (133, 1568259), (147, 1418901), (171, 1219757), (209, 997983), (217, 961191), (219, 952413), (231, 902937), (279, 747593), (341, 611667), (399, 522753), (441, 472967), (511, 408177), (539, 386973), (589, 354123), (627, 332661), (651, 320397), (657, 317471), (693, 300979), (803, 259749), (931, 224037), (1023, 203889), (1197, 174251), (1387, 150381), (1463, 142569), (1519, 137313), (1533, 136059), (1617, 128991), (1767, 118041), (1881, 110887), (1953, 106799), (2263, 92169), (2387, 87381), (2409, 86583), (2793, 74679), (3069, 67963), (3577, 58311), (4123, 50589), (4161, 50127), (4389, 47523), (4557, 45771), (4599, 45353), (4851, 42997), (5301, 39347), (5621, 37107), (6479, 32193), (6789, 30723), (7161, 29127), (7227, 28861), (8379, 24893), (9709, 21483), (10241, 20367), (10731, 19437), (12369, 16863), (12483, 16709), (13167, 15841), (13671, 15257)]