208189905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 128

約数和(自身を含む): 459841536

約数和(自身を除く): 251651631

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 23, 33, 35, 51, 55, 69, 77, 85, 105, 115, 119, 161, 165, 187, 231, 253, 255, 345, 357, 385, 391, 461, 483, 561, 595, 759, 805, 935, 1155, 1173, 1265, 1309, 1383, 1771, 1785, 1955, 2305, 2415, 2737, 2805, 3227, 3795, 3927, 4301, 5071, 5313, 5865, 6545, 6915, 7837, 8211, 8855, 9681, 10603, 12903, 13685, 15213, 16135, 19635, 21505, 23511, 25355, 26565, 30107, 31809, 35497, 39185, 41055, 48405, 53015, 54859, 64515, 74221, 76065, 86207, 90321, 106491, 116633, 117555, 150535, 159045, 164577, 177485, 180251, 222663, 258621, 274295, 349899, 371105, 431035, 451605, 532455, 540753, 583165, 603449, 816431, 822885, 901255, 1113315, 1261757, 1293105, 1749495, 1810347, 1982761, 2449293, 2703765, 3017245, 3785271, 4082155, 5948283, 6308785, 9051735, 9913805, 12246465, 13879327, 18926355, 29741415, 41637981, 69396635, 208189905]

約数ペア:

[(1, 208189905), (3, 69396635), (5, 41637981), (7, 29741415), (11, 18926355), (15, 13879327), (17, 12246465), (21, 9913805), (23, 9051735), (33, 6308785), (35, 5948283), (51, 4082155), (55, 3785271), (69, 3017245), (77, 2703765), (85, 2449293), (105, 1982761), (115, 1810347), (119, 1749495), (161, 1293105), (165, 1261757), (187, 1113315), (231, 901255), (253, 822885), (255, 816431), (345, 603449), (357, 583165), (385, 540753), (391, 532455), (461, 451605), (483, 431035), (561, 371105), (595, 349899), (759, 274295), (805, 258621), (935, 222663), (1155, 180251), (1173, 177485), (1265, 164577), (1309, 159045), (1383, 150535), (1771, 117555), (1785, 116633), (1955, 106491), (2305, 90321), (2415, 86207), (2737, 76065), (2805, 74221), (3227, 64515), (3795, 54859), (3927, 53015), (4301, 48405), (5071, 41055), (5313, 39185), (5865, 35497), (6545, 31809), (6915, 30107), (7837, 26565), (8211, 25355), (8855, 23511), (9681, 21505), (10603, 19635), (12903, 16135), (13685, 15213)]